Please help me ASAP The CEO of Google claims that Google workers are cooler than Apple workers,which is why the number of Facebook friends for Google employees is “generally higher.” We havesamples of 144 Google employees and 169 Apple employees. The average number of friends forGoogle workers is 130 and 127 for Apple workers. The sample variances are 256 for Google and 225for Apple. a) The (true) mean for the number of Facebook friends in the country is 126. At a 5% level, is theGoogle’s mean number of friends statistically different from the country’s mean of 126? Whatabout the Apple’s mean number of friends? b) Compute the p-values from the previous tests. Based on those p-values, can you reject any of the null hypotheses from part (a) at a 1% level? And at a 10% level? c) Using a 1% significance level test, is there statistical evidence showing that workers in Googleare cooler (have more friends) than the workers in Apple? d) construct also a 95% confidence interval for this difference and evaluate the following statement:“At a 5% level and with a two-sided alternative, I can reject the null hypothesis that there is adifference of two friends between the mean number of friends of Google and Apple.”
Please help me ASAP The CEO of Google claims that Google workers are cooler than Apple workers,which is why the number of Facebook friends for Google employees is “generally higher.” We havesamples of 144 Google employees and 169 Apple employees. The average number of friends forGoogle workers is 130 and 127 for Apple workers. The sample variances are 256 for Google and 225for Apple. a) The (true) mean for the number of Facebook friends in the country is 126. At a 5% level, is theGoogle’s mean number of friends statistically different from the country’s mean of 126? Whatabout the Apple’s mean number of friends? b) Compute the p-values from the previous tests. Based on those p-values, can you reject any of the null hypotheses from part (a) at a 1% level? And at a 10% level? c) Using a 1% significance level test, is there statistical evidence showing that workers in Googleare cooler (have more friends) than the workers in Apple? d) construct also a 95% confidence interval for this difference and evaluate the following statement:“At a 5% level and with a two-sided alternative, I can reject the null hypothesis that there is adifference of two friends between the mean number of friends of Google and Apple.”
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Please help me ASAP
The CEO of Google claims that Google workers are cooler than Apple workers,
which is why the number of Facebook friends for Google employees is “generally higher.” We have
samples of 144 Google employees and 169 Apple employees. The average number of friends for
Google workers is 130 and 127 for Apple workers. The sample variances are 256 for Google and 225
for Apple.
a) The (true) mean for the number of Facebook friends in the country is 126. At a 5% level, is the
Google’s mean number of friends statistically different from the country’s mean of 126? What
about the Apple’s mean number of friends?
b) Compute the p-values from the previous tests. Based on those p-values, can you reject any of the null hypotheses from part (a) at a 1% level? And at a 10% level?
c) Using a 1% significance level test, is there statistical evidence showing that workers in Google
are cooler (have more friends) than the workers in Apple?
are cooler (have more friends) than the workers in Apple?
d) construct also a 95% confidence interval for this difference and evaluate the following statement:
“At a 5% level and with a two-sided alternative, I can reject the null hypothesis that there is a
difference of two friends between the mean number of friends of Google and Apple.”
“At a 5% level and with a two-sided alternative, I can reject the null hypothesis that there is a
difference of two friends between the mean number of friends of Google and Apple.”
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