Answered: Please see below. I really need help…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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Question

Please see below. I really need help with this. Please read the directions thoroughly as the answers must include mu, the appropriate symbol, and number for answer in them. For part a and b, I got two slightly different answers. Need help figuring out the correct ones for parts a and b. SEE PICTURE!!

1st Attempt Part a answer:

Null hypothesis=H0, Alternate hypothesis=H1

H0: μ = 6.6 Vs H1: μ > 6.6

Part a second attempt answer:

H₀: µ = 6.5

H_a: µ ≠ 6.5

Part B first attempt answer:

H₀: µ = 22.35

H_a: µ < 22.35

Part B second attempt answer:

H0: μ = 22.37 Vs H1: μ < 22.37

Transcribed Image Text:For each situation, state the null and alternative hypotheses: (Type "mu" for the symbol u , e.g. mu > 1 for the mean is greater than 1, mu < 1 for the mean is less than 1, mu not =1 for the mean is not equal to 1. %3D Please do not include units such as "mm" or "$" in your answer.) (a) The diameter of a spindle in a small motor is supposed to be 6.5 millimeters (mm) with a standard deviation of 0.18 mm. If the spindle is either too small or too large, the motor will not work properly. The manufacturer measures the diameter in a sample of 15 spindles to determine whether the mean diameter has moved away from the required measurement. Suppose the sample has an average diameter of 6.39 mm. Ho: Ha: (b) Harry thinks that prices in Caldwell are lower than the rest of the country. He reads that the nationwide average price of a certain brand of laundry detergent is $22.35 with standard deviation $1.27. He takes a sample from 4 local Caldwell stores and finds the average price for this same brand of detergent is $21.32. Ho : H.: thio pnblo Note: Vou can oamn partiel omdit o

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