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Assume that the heights of women are normally distributed with mean of 63.6 inches and a standard deviation of 2.5 inches. Find the third quartile value in the given distribution of the heights of women.
Servings of water is approximately normally distributed with a standard deviation of 1.4 serving, what proportion of americans drink a. more than the recommended 8 servings.
A food snack manufacturer samples 13 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 14.7 oz. and the sample standard deviation is 0.50 oz., find the 95% confidence interval of the true mean.
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
Assume the standard deviation of the distribution is 2.5pounds, what is the probability that the mean of a sample of 55 families is between 17 and 18 pounds.
Suppose the counselor found the sum of squared deviations from the mean of the sample to be 135. Given that he tested 10 people, what would the estimated population variance be?
Of those mountain climbers who attempt mt. McKinley, only 60% reach the summit. In a random sample of 14 mountain climbers who are going to attempt mt. McKinley, what is the probability of each of the following?
A standard deviation of 12. If the data for both tests are normally distributed, on which test did the student score better relative to the other students in each class?
Waiting time is normally distributed. Calculate the value of the test statistic for your random sample rounded to two decimal places?
What is the probability that a randomly selected assembly line worker earns more than $22,000? What is the probability that the average salary of 5 assembly line workers is higher than $22,000?
If the match ends when one of the teams has scored k more points than the other, find the probability that team 1 wins.
Convinving evidence at the .05 significance level to support the claim that the actual number of cards is an undergrads wallet is greater than 4.09. state the null and alternative hypothesis.
The number of widgets produced by 9 employees in an eight hour shift is recorded as: 135, 120, 116, 119, 121, 125, 135, 131, 123. What is the median of the number of widgets produced presented above?
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