3) Previous experience shows the variance of a given process to be 40. Process engineers are testing to determine whether this value has decreased. a) What is the appropriate null and alternate hypothesis to determine if the process variance has decreased? Ho:o² > 40 versus Ha:o² < 40 b) Choose a level of a. Use a = 0.05 for this problem. c) To test the hypothesis, the process engineers take a sample of 22 and record the variable of interest. The data appear in the Process2 worksheet of the Quiz 2 Review Problems data workbook on Moodle. Collect data and calculate necessary statistics to test the hypothesis. Variance 20.89 d) Sketch the sampling distribution. Include the critical value and test statistic Critical Value: x =11.59 S'(n-1) _ 20.89(22–1) o? Test Statistic: Xố =10.97 40 e) Draw a conclusion and report that in the problem context. Reject Ho, conclude the process variance has decreased. f) Calculate the p-value for the hypothesis test Using table in book: 0.025 < p-value= P(xev <10.97) < 0.05 Using Excel: p-value=0.0366 A 52 44 51 58 48 51 53 47 43 49 50 54 52 47 47 49 38 49 50 42 55 52

Q: find tai' U3 exady in radions

A:

Q: 3,5,12,55,648?

A: If we see this pattern clearly we can see  3,5,12,55,648 3*5-3 = 12 5*12-5 = 55 12*55-12 = 648 So…

Q: 20 4 40 20 6. O 4 O 5 O 8

A: By using  fact of  second figure

Q: Need help on 11, 12, 13, 14 and 15

A: Note:Since you have asked multiple questions, we will solve the first question for you according to…

Q: 12, 18, 23, 14, 14, 16, 20, 16, 14, 16 O

A: Given that, 12, 18, 23, 14, 14, 16, 20, 16, 14, 16

Q: IQR of 6,7,9,20,22,25,27,34,48,59

A: Observations are: 6,7,9,20,22,25,27,34,48,59

Q: How many six-digit license plates can be made if no plate begins with 0 or 6

A:

Q: 72 74 71 71 76 70 77 75 72 72 77 72 75 70 73 74 75 73 74 74

A: The association between two variable is tested using the chi square test. In general chi square is…

Q: a. What is the probability of a player getting 'Bingo' when the 5th number is chosen? b. What is the…

A: BINGO4273255731525415875826059707223354621317434867

Q: what mark must a candidate achieve to secure an inter

A:

Q: Find x. A X+8 2x-5 10 14 3, 27

A: We will use the angle bisector theorem for triangle.

Q: MATH STATISTICS Part 4. 1. Examine the data set below that represents a sample. B.) the median of…

A: First arrange the data : 40,40,42,45,47,50,51,57,58,60,66,67,77,80,83,86,87,88,88,90 N= 20(even)

Q: Licence plates in Ontario consists of four letters followed by 3 digits chosen from 0,1,2,.,9. How…

A: Licence plates in Ontario consists of four letters followed by 3 digits chose from 0, 1, 2, ..., 9.

Q: 80 92 52 42 90 58 78 116 121 90 75 82 81 69 44 19 40 41 42 81 58 59 81 27 100 55 35 69 15 67 28 99…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: 19 37

A: Given Triangle is angle of ?

Q: |the values denoting the limits of the data contained within list the number of standard deviations…

A: Introduction: Suppose x1, x2, …, xn is a sample of size n taken from a population of interest. The…

Q: 40 Ο 18 Ο 12 16 Ο 14 30 24 ?

A: We have to find side of given triangle.

Q: A university conducted a survey of 382 undergraduate students regarding satisfaction with student…

A:

Q: The accompanying table lists the ages of acting award winners matched by the years in which the…

A: Correlation coefficient is used to measure the association between two variables. It is calculated…

Q: Suppose a data value of 80 was added to the set of data. Determine how each of the following…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: an ATM personal identification number consists of 3 digits. 0,1,2,...,8 or 9 in succession. how many…

A: GivenMake 3 digit with the help of 0,1,2,3,4,5,6,7,8,9