manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.2 years, and standard deviation of 1.7 years. If you randomly purchase one item, what is the probability it will last longer than 10 years?

Q: Briefly describe one-way analysis of variance using at least the following questions: • In what…

A: As the name suggests, Analysis of Variance (ANOVA) is used to analyze the variance of the observed…

Q: If n=21, (x-bar)=46, and s=3, construct a confidence interval at a 90% confidence level. Assume the…

A: given data sample size (n) = 21sample mean ( x¯ ) = 46sample standard deviatio (s) = 390% ci for…

Q: In a study of 787 randomly selected medical malpractice lawsuits, it was found that 482 of them were…

A: given data clim : p > 0.50n = 787x = 482

Q: A poll was conducted to investigate opinions about global warming. The respondents who answered yes…

A: It is needed to test whether the sex of the respondent is independent of the choice for the cause of…

Q: We define the ratio random variable of two random variables X and Y is Z = . (a) If X~ Binomial (3,)…

A: Given that the ratio random variable of two random variables X and Y is Z=XY.

Q: A corporation must appoint a president, chief executive officer (CEO), chief operating officer…

A: The question is about permutation and combination Given : No. of officers need to be appoint in a…

Q: Determine the probability that the child must wait between 2 and 3 minutes on the bus on a given…

A: we have to use exponential probability distribution with mean exponential probability distribution…

Q: The following OLS assumption is most likely violated by omitted variables bias: O A. there is…

A: The objective is to identify the assumption that is most likely violated by omitted variables bias:…

Q: A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed…

A: Given: n = 7 Confidence level = 99% Formula Used: Confidence interval = X ± t*sn

Q: Compute the expected counts for each color. Color Brown Yellow Red Blue Orange Green Frequency 59 65…

A: Formula Used: Test-statistic χ2 = ∑O-E2E

Q: The numbers of tickets issued for traffic violations by 8 state troopers during a holiday weekend…

A: Note: Hi! Thank you for the question. As you have posted two independent questions, according to our…

Q: 4. According to the credit rating agency Equifax, credit limits on newly issued credit cards…

A:

Q: You estimated a regression with the following output. Source | SS df MS Number of obs = 248…

A: In this case, the independent variable is X and the dependent variable is Y.

Q: An elevator has a placard stating that the maximum capacity is 2670 lb-15 passengers. So, 15 adult…

A: Given: μ = 180 σ = 27 Formula Used: Z = X-μσ

Q: Use the normal distribution to find a confidence interval for a difference in proportions P1 - P2…

A: we have :-  p̂1 = 0.79  p̂2 = 0.69 Now best estimate for confidence interval for difference in…

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

A: Given that  Z follows standard normal distribution with mean zero and standard deviation one  Z ~…

Q: The following are the distances (in miles) to the nearest airport for 11 families. 9, 17, 18, 22,…

A:

Q: The manager of the Granite Rock Company believes that the average delivered truckload weighs…

A: Given information: The manager of the Granite Rock Company believes that the average truckload…

Q: You wish to test the following claim (H1H1) at a significance level of α=0.01α=0.01.…

A: The given hypothesis is H0:μ=63.6 Versus Ha:μ≠63.6.

Q: what is c? count?

A: Here C stands for combinations.   Combinations is represented as nCr  = n!/(n-r)!r!

Q: What is the probability of getting a multiple of 2 or 5 when an unbiased cubic die is thrown?

A:

Q: Consider the following case of exponential decay. A privately owned forest that had 1 ,500,000 acres…

A: Given information: r=3%=0.03t=10 years.P0=1500000 Find: P(t)=? Formula: Exponential growth model…

Q: Marie is getting married tomorrow, at an outdoor ceremony in the desert. In recent years, it has…

A: As Prof. N. G. Das said "Let A1, A2, ... , An be n mutually exclusive and exhaustive events with…

Q: Determine the required value of the missing probability to make the distribution a discrete…

A: GIVEN DATA,x      P(x)3      0.314     a5     0.206     0.23we have to find out the p(4)=?

Q: Here are yesterday's high temperatures (in Fahrenheit) in 14 U.S. cities. 46, 49, 50, 55, 56, 59,…

A: Given: n = 14 Formula Used: Lower quartile Q1 = n+14thterm Median Q2 = 2(n+1)4thterm Upper quartile…

Q: Express the confidence interval (0.092,0.146) in the form of p-E<p<p+E. <p<(Type integers or…

A: given data  confidence interval : (0.092,0.146) we have to represent it in form of p^ - E…

Q: Consider the hypotheses shown below. Given that x=41, o=11, n = 34, a = 0.01, complete parts a and…

A: Given,x¯=41σ=11n=34α=0.01and  H0:μ≤39 H1:μ&gt;39

Q: Hello, I submitted your answer and it says it incorrect. Our text book uses zcore tables up to 4…

A: Given that Sample size =16 Standard deviation (σ)=2.05 We have to find the confidence interval for…

Q: Microsoft wants to estimate the percentage of the population that regularly use Bing to perform…

A: From the provided information, Sample size (n) = 840 From which 82 regularly use Bing. Sample…

Q: The average number of homes sold by the Acme Realty company is 2 homes per day. What is the…

A: To solve this problem, Poisson distribution should be used. Poisson distribution has a probability…

Q: Meteorologists in Texas want to increase the amount of rain delivered by thunderheads by seeding the…

A: Solution: n= 30 Sample size μ=300 Population mean

Q: According to an almanac, 70% of adult smokers started smoking before turning 18 years old. K (a)…

A: We have given that p = 70% = 0.70 n = 100

Q: Use the standard normal table to find the area to the left of z = -2.64. Click here to view page 1…

A: Denote the random variable Z has a standard normal distribution. Thus, Z~ N (µ=0, σ=1).

Q: Many universities use a student's ACT score to help with admission decisions as well as placement…

A: From given data we have : ACT score 18 20 22 24 26 28 30 GPA 15 2 3 3.5 4 4.5 5.5

Q: In a national health survey, the pulse rate of 2344 adults in a particular country averaged 69.59…

A: Given data: Mean = 69.59 Standard deviation = 11.2

Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…

A: Given information- Population mean, µ = 55.5 inches Population standard deviation, σ = 7.5 inches…

Q: Test whether there is a difference between two groups in the proportion who voted, if 45 out of a…

A: Assume that p1, p2 are the population proportions of who voted, in Group 1 and Group 2,…

Q: O O Consider the 24 values shown in the table. Complete parts a through d below. 31 15 23 29 10 18…

A: Given: N = 24 Formula Used: Mean = ∑Xin

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

A: Solution : Assume that the readings at freezing on a batch of thermometers are normally distributed…

Q: Use the​ time/tip data from the table​ below, which includes data from New York City taxi rides.​…

A: It is given that the predictor variable x is time and response variable y is tip.

Q: Suppose the number of cell phone calls made or received per day by cell phone users follows a normal…

A:

Q: In the context of regression analysis, which of the following statements are true? I. A linear…

A:

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A: Givensample size(n)=13p=0.2x~Binomial(n=13,p=0.2)P(X=x)=Cxn×px×(1-p)n-x      ; x=0,1,...,n

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

A: Let us denote the given sample values as X: Mean: X¯=∑Xn =40+38+36+28+....+12.7+11.910 =22.86

Q: A popular theory is that presidential candidates have an advantage if they are taller than their…

A: Solution: Let x = President Height   and y=Main Opponent height  x y d=x-y (d-d)2 180 168 12…

Q: Cholesterol levels in mmol/L on 10 patients were as follows: 1.50  1.95   1.84   2.20   1.68   2.41…

A: Cholesterol levels in mmol/L on 10 patients were as follows: X: 1.50  1.95   1.84   2.20   1.68…

Q: Express the confidence interval 50.3% ± 7.

A: Given that The confidence interval is, 50.3% ± 7.9%

Q: Assume that the duration of human pregnancies can be described by a Normal model with mean 265 days…

A: Let X denote the duration of human pregnancies and it follows normal distribution with mean μ=265…

Q: The following data lists the ages of a random selection of actresses when they won an award in the…

A: Given data: Actress Actor 28 59 31 41 30 38 29 35 36 28 28 33 27 48 40 35 33 39…

Q: Using Table VI in Appendix C, find to 3 decimal places the value of x² for 5 degrees of freedo (a)…

A: