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 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 30 131.64 mm 5.11 mm
A. D. 150 30 136.21 mm 5.32 mm

Required:
a. What are the null and alternative hypotheses?
b. Identify the test statistic?
c. Use technology to identify the P-value?
d. What is the conclusion for this hypothesis test?

Asap for seven months an ice creams vendor collects data showing the number of cones sold a day (c) and the degrees above 70 degrees f the vendor finds that there is a positive linear association between c and t that is the best modeled by this equation c=3.7t+98 which statement is true? the model predicts that the average number of cones sold in a day is 3.7 the model predicts that the average number of cones sold i a day is 98 a model predicts that for each additional degree that the high temperature is above 70 degres f the total of number of cones sold increases by 3.7 the model predicts for each additional degree that the high temperature is above 70 degrees f the total number of cones sold increasingly by 98

What statement is true? 2x^2-9x+2=-1

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.