A nutritionist selected a random sample of n = 50 adult males. The average daily intake of dairy products was found to be x = 756 grams per day, with a standard deviation of s = 35 grams per day. Use this sample information to construct a 99% confidence interval for the mean daily intake of dairy products for adult men.

Q: A random sample of n = 30 is taken from a normally distributed population with a mean of u = 80 and…

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Q: The heights of pine trees at a local tree farm are known to follow a normal distribution with a…

A: Given: Sample Sizen=99Sample MeanX=121Standard Deviationσ=7 The z value corresponding to the area…

Q: A study found the temperature of 125 randomly selected healthy adults averaged 98.25 F with a…

A: It is given that sample mean is 98.25 and standard deviation is 0.733.

Q: The annual salaries of all employees at a financial company are normally distributed with a mean 4 =…

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Q: A sample of 25 two-year-old chickens shows that they lay an average of 21 eggs per month. The…

A: Given, Sample size, n=25 mean, x =21 standard deviation, s=2   Formula for confidence interval( CI )…

Q: Birth weights are normally distributed with a mean of 7.4 pounds and a standard deviation of 1.1…

A: Birth weights are normally distributed with a mean of 7.4 pounds and a standard deviation of 1.1…

Q: The average score for 100 teenagers playing a certain computer game was 80,000 points per player. If…

A: Here we need to construct a 68% confidence interval for the mean score of all teenagers. Given…

Q: For a random sample of 65 overweight men, the mean of number of pounds that they were overweight was…

A: Given, Sample size = 65 Sample mean = 32 Population standard deviation = 3.8   Since the population…

Q: A personnel manager has found that historically the scores on aptitude tests given to applicants for…

A: N=9, Standard deviation : d = 82.4 Mean score : a = 787.9   P(a-t ˂ x ˂ a+t) = 0.95 P(a-t ˂ x ˂ a+t)…

Q: A group of statistics students decided to conduct a survey at their university to find the average…

A: Given: The sample number of students are n=240. The sample mean amount of time students spent…

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Q: When 40 people used Weight Watchers for one year, their mean weight loss was 3.0 lbs and their…

A: The test hypotheses are given below: H0:μ=0 lbsHa:μ>0 lbs From the given information, the…

Q: The grade-point average in an econometrics examination was normally distributed with a mean of 75.…

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Q: A sample of 77 subjects went on a low-carbohydrate diet for six months. At the end of that time, the…

A: Given that  Sample size n1=77 , n2=79 Sample means x1=4.7 , x2=2.6 s1=7.16 , s2=5.9

Q: Find the 90% confidence interval for the standard deviation of the lengths of pipes if a sample of…

A: given data s = 10.2 n = 22 90% CI for σ = ? α = 1 - 0.90 = 0.10df = n - 1 = 21χ2L = χ21-α2,n-1…

Q: The results of a common standardized test used in physchology research is designed so that the…

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Q: In a test of the effectiveness of garlic for lowering cholesterol, 64 subjects were treated with raw…

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Q: In a test of the effectiveness of garlic for lowering cholesterol, 81 subjects were treated with raw…

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Q: A study of commuting times reports the travel times to work of a random sample of 1068 employed…

A: Given data,  x = 54.0  s = 60.9 minutes n=1068 standard error of the mean=?

Q: A sample of 30 NBA players had a sample mean of their heights as 80.5 inches. If the standard…

A: Given information Sample size n = 30 Sample mean x̅ = 80.5 inches Population standard deviation σ =…