manufacturer knows that their items have a normally distributed lifespan, with a mean of 14.6 years, and standard deviation of 4 years. If you randomly purchase one item, what is the probability it will last longer than 12 years?

Q: The probability that a bowler bowled a ball from a point will hit by the batsman is 14. Three such…

A:

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A: Obtain the 80% confidence interval for the difference in the proportion of teenagers with…

Q: You estimated a regression with the following output. Source | SS df MS Number of obs = 157…

A: Given information: Source SS df MS   Number of obs =  157 Model 1065382460 1 1065382460…

Q: What is the probability of getting a sum 9 from two throws of a dice?

A:

Q: A simple random sample of 49 8th graders at a large suburban middle school indicated that 82% of…

A: From the provided information, Sample size (n) = 49 Sample proportion (p̂) = 0.82 Confidence level =…

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: Bob is a high school basketball player. He is a 70% free throw shooter. That means his probability…

A:

Q: Given  the MGF of X is MX(t)=(0.90+0.10et)10MX(t)=(0.90+0.10et)10 .  Clearly; i)   Find the…

A: Solution: Given MGF is  MX(t)=(0.90+0.10et)10

Q: A study investigated ways to prevent staph infections in surgery patients. The researchers examined…

A: Given that, x=86,n=100 The sample proportion is, p^=xn  =86100  =0.86

Q: A random sample of n₁ = 276 people who live in a city were selected and 112 identified as a "dog…

A: given data n1 = 276  x1 = 112p^1 = x1n1 = 112276 = 0.4058       n2 = 117  x2 = 70p^2 = x2n2 = 70117…

Q: A genetic experiment involving peas yielded one sample of offspring consisting of 430 green peas and…

A: The claim is that 23% of the offspring peas are yellow. The hypotheses are given below: Null…

Q: A research center poll showed that 80% of people believe that it is morally wrong to not report all…

A: given data, A reasearch center poll showed that 80% of people belive that it is morally wrong to not…

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: A printing machine can print any one of n letters L₁, L2,..........Ln. It is operated by electrical…

A: Given Information: A printing machine can print any one of n letters L1, L2,........Ln. The machine…

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: Let X be a random variable with Normal distribution, mean = 16, sd = 2. Find the value of x such…

A:

Q: In a survey, 16 people were asked how much they spent on their spouses last birthday gift. The…

A: Given,sample size(n)=16sample mean(x¯)=$35sample standard deviation(s)=$3

Q: The mean blood cholesterol level for all men aged 20 to 34 years is μ=188μ=188 mg/dl. We suspect…

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Q: The letters of the word CASTIGATION is arranged in different ways randomly. What is the chance that…

A: We have given the following letters of word CASTIGATION…

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>39

Q: What is the number of restrictions in the null hypothesis.

A: From given data we have ; H0:β2+β3=1,β2=0,β4=4

Q: The National Education Association collects data on the number of years of teaching experience of…

A: "Since you have asked multiple questions we will solve the first question for you.if you want any…

Q: Assume that a set of test scores is normally distributed with a mean of 110 and a standard deviation…

A: Empirical rule of probability:- Approx. 99.7% of the data lies between ± 3 SD limit of mean μ  ±3 σ…

Q: Out of first 20 natural numbers, one number is selected at random. The probability that it is either…

A:

Q: Table 1: Persons with secondary education Classes Less than 50 Less than 54 Less than 58 Less than…

A: Solution: From the given information, the table 1 is From the given information, the table 2 is

Q: Answer the following question: 1-An ABC news report stated that the distance that people commute to…

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Q: Problem Situation #1: STARBUCKS GROWTH: Year # of stores HINT: Before using technology to find the…

A: Please find the explanation below. Please note that as per our guidelines we can answer the first…

Q: line 3 i cant make out? line one says given data then line 2 says m=100 then what does the next line…

A: Line 2  : Mean ( myu) = 100

Q: 13.4 pts - The histogram below shows the distribution of a population with mean μ = 4 and standard…

A: Given that mean is 4 and the standard deviation is 2.828.

Q: A simple random sample of 49 8th graders at a large suburban middle school indicated that 82% of…

A: It is given that a simple random sample of 49 students indicated that 82% of them are involved with…

Q: The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large…

A: given data sample size (n) = 50sample mean ( x¯ ) = 8652sample standard deviatio (s) = 200399% ci…

Q: 10 marbles are numbered 1 through 10 and placed in a bag. A marble is drawn from random bag.…

A: There are 10 marbles. So sample size is n= 10. A marble is drawn randomly. Then probiotics 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: Thanks to an initiative to recruit top students, an administrator at a college claims that this…

A: The given sample size is 11, sample mean is 118 and sample standard deviation is 9.

Q: How many different five-character passwords can be formed from the lowercase letters of the alphabet…

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Q: A rental car agency has 15 rental cars on its lot. The following table shows the mileage of each…

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Q: 1-Create the confidence interval for the mean Overall Grade for those with 78 or better on Chapter…

A: Given data: Chapter Review Overall Grade 98 96 96 94 94 90 93 94 92 91 92 96 91 93…

Q: The best predicted temperature at a time when a cricket chirps 3000 times in 1​ minute, based on the…

A: Given: n = 8 Formula Used: The regression equation is: Y = a + bX b = n∑XY-∑X∑Yn∑X2-∑X2 a = ∑Y-b∑Xn

Q: You randomly select an integer from 0 to 9 (inclusively) and then randomly select an integer from 0…

A: "Since you have asked multiple question,we will solve the first question for you.If you want any…

Q: 5. The plot below is an example of a Probability Calculation for a person in the group 75 inches or…

A: Here option D is correct. The plot below is an example of Normal Probability Distribution.

Q: The story in question 6 uses the concept of ????? A) poison probability distribution  B) bell…

A: The probability density function of a geometric random variable X is given as, P(X=x) = qx-1p ;…

Q: In the trunk where there are 5 triangles, 3 circles and 2 rectangles. Performing extractions with…

A: given data  5 triangles 3 circles 2 rectangles ___________________ 10 total items

Q: Researchers were interested in assessing the effects of a new treatment on seasonal affective…

A: Given information: Subject  0 Week 2 Week 4 Week M participant 1 28 45 69 47.33333333 2 32 43…

Q: Suppose a card is drawn randomly from an ordinary deck of playing cards, and then put back in the…

A:

Q: 6. If X and Y are independent RVs with variances 8and 5.find the variance of 3X+4Y.

A: From the provided information, X and Y are independent RVs with variances 8 and 5. V (X) = 8 and V…

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: What would be the P-value?

A: From the obtained results, the test statistic value is 1.808.

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