Mathematics, 20.08.2019 19:30 pooperjooper
The average annual income of 100 randomly chosen residents of santa cruz is $45,221 with a standard deviation of $30,450.a. what is the standard deviation of the mean annual income? b. test the 1-sided hypothesis that the average annual income is $40,000 against the alternative that it is less than $40,000 at the 10% significance level. c.test the 2-sided hypothesis that the average annual income is equal to $42,000 against the alternative that it is not at the 5% significance level. d. what is the confidence interval for part (c)? e. what is the p-value for part (b)? f. do you reject or fail to reject part (c)? write your answer and a complete, accurate, sentence.
Answers: 3
Mathematics, 21.06.2019 18:00
Stephen thublin invests $1,000,000 in a 45-day certificate of deposit with 6.55% interest. what is the total interest income from the investment?
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Mathematics, 21.06.2019 23:20
Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?
Answers: 1
The average annual income of 100 randomly chosen residents of santa cruz is $45,221 with a standard...
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