The latest poll from ESPN asked fans what their favorite sport was, considering pro, college and highschool levels. Out of 1000 fans, 32% of fans said their favorite sport was college basketball. Construct a 95% confidence interval.

Confidence interval is

Step-by-step explanation:

Given that 32% of fans sport is basketball as favorite sport. So total number of fans is,

So 320 fans favorite sport is basket ball.

Now find sample proportion ,

Substituting the value,

Formula for confidence interval is,  

To calculate the z value.

Now divide above value by 2,  

To find the value of z score calculate the area under the curve as follows

On z table, find the value of 0.975. So the row corresponding to 0.975 is 1.9 and column corresponding to 0.975 is 0.06. Adding these two values the z score is 1.96.

or find the value from excel by using command as follows,  

=NORM.S.INV(0.025)= -1.959963985

Now substituting the value,  

Lower end of the interval is,

Upper end of the interval is,

Therefore 95% confidence interval is

idk

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7/2

(decimal: 3.5)

welcome ; )

step-by-step explanation: