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Another one, I need these corrected so I can figure the correct way. Please help!
DF is wrong; can not pool variances when they differ this much; there appears to be an error on the low end of the CI; "The test statistic t (998) = -7.89, with p-value = 0.000 < 0.001 indicates that the data provides a strong evidence against the null hypothesis. So reject the null hypothesis." - but what is H0 that we are rejecting?
At a certain pizza parlor, 45% of the customer's order a pizza containing onions, 38% of the customer's order a pizza containing sausage, and 79% order a pizza containing onions or sausage
Explore the descriptive statistics and draw some scatter plots. Does this meet the basic assumptions of regression?
An accepted standard deviation for LSAT scores is 125. A random sample of 25 scores had an average of 1,375. Assume a significance level of 0.05. State the appropriate null and alternative hypotheses. Calculate the p-value to test the hypotheses.
Create the 95% confidence interval for proportion of adults from Country A who say human activity contributes to global warming.
Ace Jack had no idea whether the $100,000 he pays for training for his used car salespeople works.
A standard deviation of 60 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 322 seconds.
The number of items rejected daily by the manufacturer because of defects for last 30 days are:
Assume that each of the following studies cannot be analyzed using a parametric procedure. For each of the following studies (below), indicate the appropriate nonparametric procedure, and explain why you chose it.
If these two assumptions are correct, then what is the probability that the sample mean waiting time,T, based on your random sample of size n=36, will exceed 104 hours?
The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. a) what is the area between 415 pounds and the mean of 400 pounds?
Construct a 90% confidence interval for the proportion of all kernels that would not pop.
Write a paragraph describing your interpretation when the slope is positive, zero, and negative. If you were buying a home in this particular city, which slope would be most attractive to you and why?
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