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The Waiting time for a Pizza order is supposed to be no more than 10 minutes. Some complaints have been received that the orders are in fact taking longer than the claimed 10 minutes. A batch of 50 orders was timed and found to have an average order time of 10.9 minutes and a sample standard deviation of (36 ÷ 40 ) minutes. Prepare a hypothesis test to test whether the orders are taking longer than 10 minutes. Test at 1% significance using critical value. Show all 6 steps
a. What is the mean of the data set? b. What is the median? c. What is the mode?
(a) What is this distribution called? (b) Would you expect the shape of this distribution to be symmetric, right skewed, or left skewed? Explain your reasoning
The probability law of the number of white balls in a sample drawn without replacement from an urn of random composition.
On each hand, the high roller will win $1 with probability 0.48 and lose $1 with probability 0.52. After the 500 hands, what is the probability that the casino
How many comparisons between individuals can be made? However, for the second individual there are only 8 additional comparisons
Describe a business situation where you would want to use a t-test. Why would you choose that test? What would you expect to show by doing this?
Do you reject or fail to reject the null hypothesis? What is the effect size? assuming a=0.05, state your hypothesis for a one tailed test, the critical test statistic, your conclusion?
What is the probability that exactly 2 of them say shopping is their favorite pastime? What is the probability that at most 4 of them say shopping is their favorite pastime? What is the probability that at least 4 of them say shopping is their fav..
Could you please tell in what situation the maentl hanszel test is more appropriate than using chi square. I believe maentl hanszel is used when a confounding variable is present thus allowing for adjustment
Suppose that X1,..,Xn form a random sample from the normal distribution with unknown mean M and unknown standard deviation S, and let m and s denote the MLEs of M and S. for the sample size n=17, find a value of k such that P(m > M +ks) = 0.95
You're considering paying $5 to buy a ticket in a local lottery. You were told that 10,000 tickets will be sold. There are 5 prizes. The first prize is $5,000, the second is $1,000, the third is $500, the fourth is $100 and the last prize is $10.
question 1you have been given sample data from two offices and told that the 95 confidence interval for the difference
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