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A meteorologist claims that the average of the highest temperature in the United States is 98 degrees. A random sample of 50 cities is selected, and the highest temperatures are recorded. The data are shown At a=0.05, can the claim be rejected? Assume a=7.71.
Test whether the mean weight is greater than 16 ounces with P-value approach.
Calculate GM's Altman Z-Score. Show your calculations. Based on your calculations, would you agree or disagree with Lutz that GM is over the worst? Explain in detail.
Standard deviation of 10 minutes. A random sample of 16 cars is selected. What is the probability that the sample mean is between 45 and 52 minutes.
A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows:
Use mathematical induction to prove that : 1*2+2*3+3*4+....+n(n+1)(n+2)/3 for all n >_1 and (2) Find d=gcd (721 , 448), find integers s and t with d=721s + 448t, and put the fraction 448/721 in lowest terms.
13% red, 14% yellow, 16% green, 20% orange, and 24% blue. In a random sample of 12 M & M's what is the probability of having 2 of each color?
Is P(K + 1) = P(K)(365-K)/365 and, If so, why? Find the smallest class size K for which the probability that two or more students have the same birthday exceeds 0.5.
A quality control engineer wanted to estimate the mean weight (in grams) of M&M candies being produced on a certain machine in the factory. After collecting an appropriate random sample of M&M candies, he obtained the following weights:
What is the decision regarding H0? " "Imagine you are conducting a left tailed test of proportions; level of significance is 0.05; calculated z-value is -2.00;
Formulate both a numerical and verbal hypothesis statement regarding your research issue. Perform the five-step hypothesis test on data pertaining to your selection.
A computer system uses passwords constructed from the 26 letters (a to z) or 10 integers (0 to 9). Suppose there are 10000 users on the system with unique passwords. A hacker randomly selects (with replacement) passwords from the potential set.
The average on an exam is 75 and the standard deviation is 17. If the instructor assigned grades based on the Normal distribution what percentage of students will make A's and what percentage will make B;s in teh exam. Assume standard cut-off for ..
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