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Let x stand for the number of calories in each individual snack. 25 snacks are sampled at a time. The population mean is 95 calories and the population standard deviation is 2.5 calories.
What is the mean and standard deviation of the sampling distribution of sample means?
determine the values of c so that the following functions represent joint probability distributions of the random
Waiting time is normally distributed. Calculate the value of the test statistic for your random sample rounded to two decimal places?
Richard has just been given a 10-question multiple-choice quiz in his history class. Each question has four answers, of which only one is correct.
Environmentally-specific transformational leadership and leaders' workplace pro-environmental behaviors will be positively correlated.
a population has a variance of 34.a what is the standard deviation of this population ? 2 decimal places.b what would
What is the approximate permutation test P-value and What is the permutation test P-value for testing the equality of the means versus the hypothesis that the mean change for the treatment group is larger than the mean treatment for the control gro..
At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.
US government keeps statistics on many people in America. One interesting statistic is poverty rate. What other statistic can you name that is misleading? Why?
In a study of the effectiveness of certain exercises in weight reduction, a group of 16 persons engaged in these exercises for one month and showed the following results:
A small accounting firm pays each of its six clerks $35,000, two junior accountants $80,000 each, and the firm's owner $320,000.
How many employees are within one standard deviation from the average? How does this compare to what you would expect for a normal distribution?
You are told that 95% of the scores range between 300 and 660. Using the 68, 95,99.7 rule, what is the standard deviation of exam scores?
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