Mathematics, 18.04.2020 01:40 Gabby2581

Researchers measured skulls from different time periods in an attempt to determine whether interbreeding of cultures occurred. Results are given below. Assume that both samples are independent simple random samples from populations having normal distributions. Use a 0.05 significance level to test the claim that the variation of maximal skull breadths in 4000 B. C. is the same as the variation in A. D. 150.

n x s
4000 B. C. 30 131.62 mm 5.19 mm
A. D. 150 30 136.07 mm 5.35 mm

a. What are the null and alternativehypotheses?
b. identify the test statistic, F=?
c. The P-value is ?
d. What is the concluion for this hypothesis test?

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 16:20

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

Answers: 3

Answer

Mathematics, 21.06.2019 18:00

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Answers: 2

Answer

Mathematics, 21.06.2019 20:30

The function show two sisters' savings account and the rate at which they plan to deposit money

Answers: 3

Answer

Mathematics, 21.06.2019 21:30

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Answers: 2

Answer

You know the right answer?

Researchers measured skulls from different time periods in an attempt to determine whether interbree...

Questions

Mathematics, 17.09.2020 14:01

What's 63 percent of fifty nine...

Mathematics, 17.09.2020 14:01

First five multiples of 5...

Mathematics, 17.09.2020 14:01

What is 20% off of $9...