Mathematics, 15.07.2020 01:01 Maria3737
An economist is interested in studying the spending habits of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average expense of $15,000. What is the width of the 99% confidence interval for the mean of expense? a. 364.28 b. 728.55 c. 329.00 d. 657.99
Answers: 2
Mathematics, 21.06.2019 15:00
Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8
Answers: 1
Mathematics, 21.06.2019 21:50
Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least āc.ā using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least ācā?
Answers: 1
Mathematics, 21.06.2019 22:30
Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 Ć 10^-20 lb b. 1 Ć 10^20 lb c. 1 Ć 10^2 lb d. 1 Ć 10^-2 lb
Answers: 1
Mathematics, 21.06.2019 23:30
I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i
Answers: 1
An economist is interested in studying the spending habits of consumers in a particular region. The...
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