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Suppose a fast food restaurant wishes to estimate average sales volume for a new menu item. The restaurant has analyzed the sales of the items at a similar outlet and observed the following results:
X = 500 (mean daily sales)
S = 100 (standard deviation of sample)
n = 25 (sample size)
The restaurant manager wants to know into what range the mean daily sales should fall 95 percent of the time. Perform this calculation:
Chocolate chip cookies resulted in the following calorie amounts. At the a _ 0.01 level, is there sufficient evidence that the average calorie content is greater than 110 calories?
If only one spark plug fails, the plane will shake and not climb higher, but it can be landed safely. What is the probability that this happens? Calculate using the appropriate formula.
According to the hypothesis that the current year's seed does not meet the 85% germination rate standard at the 5% level of significance. What is the corresponding test statistic value?
Assume the condition of Normality is met for the problem below. I also want to know the following elements: (Please do not use the Student t test, nor a Chi-square test) Two-tailed test ok?
Assuming that the distribution is normal for weight relative to the ideal and 99% of the male participants scored between (-53.68, 64.64), where did 95% of the values for weight relative to the ideal lie? Round your answer to two decimal places.
A sample of 9 customers is selected. What is the probability that exactly 2 customers in the sample will default on their payments?
What are some of the words that form clues? How does one know what is a population parameter and a test statistic?
If writing scores for population have standard deviation of s = 20, does sample give sufficient evidence to conclude that new composition course has significant effect? Suppose a two tailed test with a = 0.05.
The four characters required for the passcode, the first must be a number,the 2nd and 3rd must be a number. how many different passcodes can you form?
A textile manufacturer estimates that it produces bolts of cloth with flaws following a Poisson distribution that has an average of one flaw per 200 feet of cloth.
While 60 of the children's books are nonfiction. If a book is selected at random, find the probability of selecting the following not a children's nonfiction.
Suppose a t- test is being applied to find out if the population monthly expenditure mean is less than $212. The level of significance selected is 1% and 26 accounts are sampled. What is the critical value?
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