An educational psychologist wishes to know the mean number of words a third grader can read per minute. she wants to make an estimate at the 95% level of confidence. for a sample of 695 third graders, the mean words per minute read was 38.3. assume a population standard deviation of 3.6. construct the confidence interval for the mean number of words a third grader can read per minute. round your answers to one decimal place.

(38.1,88.6)

Step-by-step explanation:

We are given the following in the question:

Sample mean, = 38.3

Sample size, n = 695

Alpha, α = 0.05

Population standard deviation, σ = 3.6

95% Confidence interval:

Putting the values, we get,

7. 153.86 ft

8. 12.56 ft

9. 78.5 m

10. 379.94 in

11. 132.665 m

12. 12.56 yd

13. 226.865 ft

14. 113.04 ft

15. 63.585 ft

16. 254.34 m

17. 50.24 cm

step-by-step explanation:

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

d 600 because 15*10*2=300

300+300=600

step-by-step explanation: