The cost of 5 gallons of ice cream has a variance of 36 with a mean of 31 dollars during the summer. What is the probability that the sample mean would be less than 29.8 dollars of a sample of 39 5-gallon pails is randomly selected?Round your answer to four decimal places.

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: From the given information we have The null and alternative hypothesis are H0 : µ = 132H1: µ >…

Q: After entering the test scores from her Statistics class of 25 students, the instructor calculated…

A: IQR is obtained as the difference between the third and first quartiles.

Q: A population has mean 49 and standard deviation 5. What is the data value that has a z-score of 2?…

A:

Q: Clinical trials involved treating flu symptons with a new medicine.  Among 1123 patients treated…

A: From the provided information, Sample size (n) = 1123 90 experienced a side effect of dizziness that…

Q: The number of hours per week that the television is turned on is determined for each family in a…

A: Given dataThe number of hours per week that the television is turned on is determined for each…

Q: McDonald’s advertises that its ice cream cones have a mean weight of 3.2 ounces.  A human server…

A:

Q: What does “statistically significant” mean in this context? (More than one answer is correct. Select…

A: Hypothesis Testing is a type of inferential procedure is statistics.

Q: On a final exam, the mean mark was 68% and the standard deviation was 12%. If John’s mark was 36%…

A: Given that on a final exam, the mean mark was 68% and the standard deviation was 12%. If John’s mark…

Q: Suppose that in a small town of 50 people, one person earns $5,000,000 per year and the other 49…

A:

Q: What mean would put 10% of he sample below it?   u= 450 o= 25 n = 81

A: μ=450,σ=25,n=81

Q: A claim is made that 85% of college students own a smartphone. Natalie believes that a larger…

A: Let p be the population proportion  p=0.85, x= 135, n=150  p^=x/n

Q: It was hypothesized that there will be a difference in the average test score in Chemistry class…

A: Denote μ1, μ2 as the true average test scores in Chemistry class between high schoolers who watched…

Q: Erica has a swimming pool at her house. Once a year she purchases a 50-pound bucket of chlorine…

A: Given information- Null Hypothesis, H0: μ = 50 pounds Alternate Hypothesis, Ha: μ < 50 pounds…

Q: Which conclusion is the most accurate summary of the results of this study?  Group of answer…

A: Given: Test statistic is t=-4.11 df=168 p value=0.0000

Q: If the mean of a data set is 22 and the SD is 5, what % of the values fall between 12 and 27? Give a…

A: given that  mean of a data set is 22

Q: The percent of the population that is left-handed has historically been 10%. In a random sample of…

A: Solution: State the hypotheses Null hypothesis: That is, the per cent of the population that is…

Q: A successful basketball player has a height of 6 feet 77​inches, or 201201 cm. Based on statistics…

A: Given information- Height of a player = 201 cm Z-score = 3.743 We know that standard height is given…

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: The random variable score X is normally distributed and middle 68% of values fall between 71 and 83…

Q: What provides a measure of the variance caused by random, unsystematic differences? a. ​the error…

A: What provides a measure of the variance caused by random, unsystematic differences? a. ​the…

Q: One sample has n = 5 scores and the second has n = 10 scores. If the pooled variance for the two…

A: Given information Pooled variance = 30 n1 = 5, n2 = 10

Q: Papa's Italian Restaurant has collected data about customer sauce orders. It calculated that…

A: Papa's Italian Restaurant has collected data about customer sauce orders as follows:…

Q: If the coefficient of variation is 40% and the mean is 70, then the variance is   a. 28.   b.…

A: