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Use for questions 1-6: To estimate the average amount that U.S. households donated to charity last...

  1. Use for questions 1-6: To estimate the average amount that U.S. households donated to charity last year, a random sample of 2500 U.S. households were surveyed. Among the households in the sample, the mean amount donated to charity was $2987 with a standard deviation of $1017

I THINK THE POPULATION MEAN IS 2987... that is my best guess. - thank you for the help <3

  1. 5. Using the distribution that you identified in question 4, where would you start the tail(s) to find the p-value?

    Use two tails started at +/- the value of the standardized test statistic.

    Use two tails started at +/- 2987.  

    Use the right tail and start it at 2987.

    Use the right tail and start it at the value of the standardized test statistic.
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Answer #1

the p-value is the probability of obtaining results as extreme as the observed results of a statistical hypothesis test, assuming that the null hypothesis is correct. The p-value is used as an alternative to rejection points to provide the smallest level of significance at which the null hypothesis would be rejected. A smaller p-value means that there is stronger evidence in favor of the alternative hypothesis.

option 1 is correct

we will Use two tails started at +/- the value of the standardized test statistic.

standardise test statistic =

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