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Statistics and standard deviation

Question 1: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?

Question 2: A final exam in Statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70

Question 3: A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following

What scores fall between 1 and +1 standard deviation?
What percent of all scores fall between 1 and +1 standard deviation?
What score falls at +2 standard deviations?
What percentage of scores falls between +1 and +2 standard deviations?

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Basic Statistics: Statistics and standard deviation

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Solution Preview :

Prepared by a verified Expert

Basic Statistics: Statistics and standard deviation

Reference No:- TGS0691973

Have a Question? (oR Write a Review)

Recent Questions Asked Basic Statistics

Q : Describe the inventory of product

Q : Per-unit standards for direct labor

Q : What are the implications of this arrangement for partners

Q : Chi-square goodness of fit hypothesis test

Q : Statistics and standard deviation

Q : Describe the selling and administrative expenses

Q : Discuss the percentage ownership acquired by the parent

Q : Determine net income for nomar

Q : What is masset''s break-even point in sales

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Solution Preview :

Prepared by a verified Expert

Basic Statistics: Statistics and standard deviation

Reference No:- TGS0691973

Recent Questions Asked Basic Statistics

Q : Describe the inventory of product

Q : Per-unit standards for direct labor

Q : What are the implications of this arrangement for partners

Q : Chi-square goodness of fit hypothesis test

Q : Statistics and standard deviation

Q : Describe the selling and administrative expenses

Q : Discuss the percentage ownership acquired by the parent

Q : Determine net income for nomar

Q : What is masset''s break-even point in sales

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