The average height of young adult males has a normal distribution with standard deviation of 2.5 inches. You want to estimate the mean height of students at your college or university to within one inch with 90% confidence. How many male students must you measure?

The total number of male students is 24 and this can be determined by using the formula of margin of error.

Given :

The formula of margin of error can be used in order to determine the sample size. The formula of margin of error is given by:

     ----- (1)

Now, substitute the known terms in the equation (1).

Cross multiply in the above expression.

n = 24.01

n 24

So, the total number of male students is 24.

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The male students must you measure 'n' = 24

Step-by-step explanation:

Step(i):-

Given Population standard deviation = 2.5 inches

Given the margin of error = 1 inches

Step(ii):-

90% confidence interval of Margin of error is determined by

cross multiplication , we get

√n  =  4.9

squaring on both sides , we get

n = 24.01≅ 24

Final answer:-

The male students must you measure 'n' = 24

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation: