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Where do CFOs get their money news? According to Robert Half International, 47% get their money news from newspapers, 15% get it from communication/colleagues, 12% get it from television, 11% from the Internet, 9% from magazines, 5% from radio, and 1% do not know. Suppose a researcher wants to test these results. She randomly samples 76 CFOs and finds that 40 of them get their money news from newspapers. Does the test show enough evidence to reject the findings of Robert Half International? Use a = .05.
Make sure you clearly state both the null and the alternative hypotheses in full sentences. Following your calculations, clearly state the conclusion in the same manner (do not simply say "accept/reject null") and explain how you arrived at this conclusion (based on which metrics)
A loaf of bread is normally distributed with a mean of 22 oz. and a standard deviation of 0.5 oz. What is the probability that a loaf is less than 22.25 oz.?
Mean of 29.44 with a standard deviation of 2.86. Conduct a two tailed hypothesis test at a significance level of .05 to see if the two means are different.
The number of 911 calls in Butte, Montana has a Poisson distribution with a mean of 12.555 calls a day. The probability of seven 911 calls in a day is ____________
Find the mean sample weight and the standard deviation of the sample weights of candies in the table. (Round your answers to five decimal places.)
A doctoral student is designing a research study. She is hoping that the results of the study are statistically significant. What type of p-value would she want to obtain? Select one of the following.
The following is an excerpt from a conversation between two employees of Linquest Technologies, Don Corbet and Rita Shevlin. Don is the accounts payable clerk, and Rita is the cashier.
Furthermore, explain why the term 'carrier' isn't appropriate for traits that show incomplete dominance or co-dominance
Discuss the assumptions of this model. Specifically, how does each variable affect demand? How do the variables influence each other? What limitations might this model have? How can it be improved?
Two of the 12 herb tiles contain a blue tint that matches the kitchen color scheme. What is the probability that these 2 tiles will be included in the splashguard?
What is the total value of your pension liabilities as of now? Hint: The total value of your pension liabilities will be the sum of the PV of pension liability
the number of spam emails received each day follows a poisson distribution with a mean of 50. approximate the following
Suppose that two populations have equal population variances but are of different sizes: N1 = 100,000 and N2 = 10,000,000. Compare the variances of the sample.
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