A random sample of 500 patients with diabetes were weighed before and after switching to a new drug and the change in their weight is computed for each patient. The resulting 90% confidence interval for the average change in the weight of diabetes patients is (1, 5) expressed in pounds. Which of the following can be the 95% confidence interval generated from the same data?

Q: Do we reject the null hypothesis?

A: From the above calculation,test statistic z = 2.50and critical value at = 0.05 is

Q: shown below. Time Money 16 7 13 28 81 19 17 12 78 50 27 82 21 17 83 101 Round to 2 decimal places.…

A: XY16817191328177812502782211011783

Q: possible outcomes for a single family. What's the probability that you find one or more families in…

A: We're thinking about children again - let's stick with our assumption that babies are boys with…

Q: Find t for 90% Confidence 을 level and n=20

A: It is given that Confidence level = 90%n = 20

Q: Step 2 of 2: If this same bet is made 623 times, how much would you expect to win or lose? Round…

A: Let X be the random variable that the amount.Here a positive number of X will be the profit and a…

Q: The average retirement age in America is 63 years old. Do small business owners retire at a…

A: 65,59,58,62,60,62,58,69,59,62,71,68,76,57

Q: Utility bills for single family homes are at least $150 per month. After an improvement in…

A: Given information:

Q: A study was done to look at the relationship between number of lovers college students have had in…

A: The independent variable is Lovers.The dependent variable is GPA.…

Q: Consumer Research, Inc., is an independent agency that conducts research on consumer attitudes and…

A: Sample size The data values are shown…

Q: O Midland National Bank selected a sample of 40 student checking accounts. Below are their…

A: The data of 40 student checking account balance is,SR…

Q: An owner of an ice cream shop wants to investigate whether a new training program affects the…

A: The objective of this question is to calculate the sample standard error of the mean for the No…

Q: The outcome variable in a multiple linear regression is best measured on which of these scales?…

A: Categorical:Categorical data represents categories and is used to label variables. It consists of…

Q: Consider the following. Month January February March April May June Month Demand January February…

A: The question is about forecasting.Given :To find :Forecast using 3 month weighted moving average

Q: Data was collected for 296 randomly selected 10 minute intervals. For each ten-minute interval, the…

A: A histogram was provided that displayed a random sample of n=296 individuals selected 10-minute…

Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…

A: Given that Mean() = 0Standard deviation() = 1X ~ N (, )= N(0,1)

Q: According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15%…

A: According to Masterfoods, the company that manufactures M&M’s,12% of peanut M&M’s are brown,…

Q: 1. In a hypothetical study (n=300), the mean systolic blood pressure (SBP) was 110.5 with a standard…

A: Let  be the population mean systolic blood pressure.Given that,Sample mean Sample size Sample…

Q: The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm…

A: The question is about identifying the type of data.Given :To find :Why the given data is called…

Q: What are the likely consequences of the following procedures on both bias and sampling error in an…

A: There are listed  procedures.The consequences on sampling error in any observational study that are…

Q: what is the Pearson r correlation coefficient between emotion and creativity

A: In the given situation, the correlations are given for the pairs of the variables math, emotion and…

Q: 3. The hypothetical probabilities of types of weather in two neighborhoods in San Francisco on an…

A: The probabilities of weather conditions at two different neighborhoods given in terms of chances are…

Q: A study was conducted of people who had bicycle crashes and whether or not they suffered facial…

A: A study was performed on people who had bicycle crashes and whether or not they suffered facial…

Q: Using data for the number of cases in the first quarter of 2022 from Table 1 (i.e., the final…

A: For studying the disease-related problem there are mainly two model or study that is used which are…

Q: Major League Baseball now records information about every pitch thrown in every game of every…

A: The given data is as follows:Population mean, Population standard deviation,

Q: 2. A. What percent of the area under a perfect normal curve lies between the mean and the mean +1…

A: To find the percent under a given standard normal curve.Given that,The curve is standard normal…

Q: (a) Carry out a test of the null hypothesis that the theory is correct, using level of significance…

A: Let p1, p2, and p3 be the three population proportions.Given that,No. of plants Test statistic No.…

Q: Based on the following table, what is the sample regression equation?

A: Here given data for regression analysis. There are 3 independent variable. Dependent variable is…

Q: Calculate the mean and standard deviation of the depression scores for those in good health for each…

A: Given,the scores of depression for healthy elders, and those with chronic disease in each of the…

Q: Suppose you are given the following data. You have run a three month moving average and found the…

A: The three month moving average and found the forecasts, difference and difference squared between…

Q: 2. A stadium vendor serves draft beer in plastic cups. On average, the vendor places fourteen ounces…

A: A stadium vendor serves draft beer in plastic cups. On average, the vendor places fourteen ounces of…

Q: A researcher wants to know if there is a difference between the mean amount of sleep that people get…

A:

Q: Business owners retire at a different average age age? The data below shows the results of a survey…

A: HypothesesHo:μ=63vsH1:μ≠63P value =0.8545 α=0.05

Q: Given the following crosstab showing ice cream preference and gender, find the following…

A: From the provided…

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: a)Suppose p is the true population proportion all households in City C that have two or more…

Q: In a random sample of five people, the mean driving distance to work was 24.3 miles and the standard…

A: Given Information:Sample size (n) = 5Sample mean () = 24.3Sample standard deviation () = 4.5

Q: 0.1505 d. Based on the above we choose to Select an answer Select an answer e. The correct summary…

A: n = 342 X = 174

Q: investigate whether a new training program affects the scooping skills of ice cream shop employees.…

A: The owner divides employees into two groups: those who receive training (CT) and those who do not…

Q: that the math score of graduates of an engineering college approximately follows a normal…

A: Standard deviation σ=21Margin of error E=0.5C.I = 95% = 0.95

Q: You intend to conduct a goodness-of-fit test for a multinomial distribution with 5 categories. You…

A: Number of categories (k) = 5To calculate the degrees of freedom for the chi-square goodness of fit…

Q: You model a stock price S(t) using a stochastic process, with t measured in years. Your model…

A: The stock price modeled using a stochastic processThe probability distribution function of the…

Q: Find the F-test statistic to test the claim that the population variances are equal. Both…

A: The standard deviation of the first sample is 3.6475 and the standard deviation of the second sample…

Q: A case-control (or retrospective) study was conducted to investigate a relationship between the…

A: The given data set as follows:Color of HelmetBlackWhiteYellowRedBlueControls (not…

Q: 1) Many species of lizards can break off their tail when attacked by predators. A herpetologist…

A: Let, d denotes the difference in the speed before removing the tail and after removing the tail.The…

Q: Consider the data. xi 2 6 9 13 20 yi 8 19 9 27 22 The estimated regression equation for…

A: 286199913272022

Q: Suppose the mean height for first grade Children is 90 Cm and the Standard deviation is 12 cm. Take…

A: For first grade children,The mean height,  The standard deviation,  The sample size, The st…

Q: Use the confidence interval to find the estimated margin of error. Then find the sample mean. A…

A:

Q: 1. You roll a pair of standard dice. The sample space is as follows: 里 日用 日照 日用 四 四 A. P (getting a…

A: For the rolling of two standard dice, the occurrence of the paired rolls are given as follows:Die…

Q: Given the linear correlation coefficient r and the sample size n, determine the critical values of r…

A: The linear correlation coefficient is and the sample size is .

Q: In a recent health survey, 1400 randomly selected US adult citizens were asked a series of questions…

A: A contingency table  summarizing the results of health level and socioeconomic class is given…

Q: In 2017, SAT Math scores were Normally distributed with mean of 520 and standard deviation of 93.…

A: Mean ()=520standard deviation ()=93