An electric supplier tracks the response time to customers reported outages. The values shown below are...
- An electric supplier tracks the response time to customers
reported outages. The values shown below are a random sample of 40
of the response time (in minutes) for one operating division of
this utility during a single month.
77 80 80 84 84 85 86 86 87 87 89 93 94 94 96 96 97 97 97 98 99 100 100 102 102 103 104 104 104 105 105 106 106 109 110 110 115 125 127 128
The utility company claims that their response to emergency outages is under two hours. Using a confidence level of 95% and the proper test statistic, determine if the utility company on average does respond within the two hours.
Homework Answers
M = 98.775
t = 2.02
sM = √(12.272/40) =
1.94
μ = M ± t(sM)
μ = 98.775 ± 2.02*1.94
μ = 98.775 ± 3.92414
95% CI [94.85086, 102.69914]
Interval is less than 120 minutes
SO, claim is right
Add Answer to:
An electric supplier tracks the response time to customers
reported outages. The values shown below are...
weight of 30 people: 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92,...
weight of 30 people:
81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96,
97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110
screenshot of matlab is needed, please and thank you
Create your own data that represents the weight of 30 people.Test the null hypothesis that the data comes from a normal distribution with mean mu = 70 and standard deviation sigma = 8. Hint: use the “ztest"...
1. For each set below, using Excel, construct a. a frequency distribution, ...
1. For each set below, using Excel, construct a. a frequency distribution, b. a relative frequency distribution, and c. a cumulative relative frequency distribution. Consider whether or not you should group your data. Describe how you determined your bin width, if you grouped the data in intervals. Set 1 75 95 103 100 93 91 90 92 89 105 86 85 81 96 103 99 94 95 91 97 92 107...
5. Mark’s class just took the admission test for business school and averaged 87.05. Chapter 10...
5. Mark’s class just took the admission test for business school and averaged 87.05. Chapter 10 Data Set 2 contains the population of scores for the 10 other classes in Mark’s university. How did Mark’s class do? Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 Class 8 Class 9 Class 10 78 81 96 85 88 78 90 79 96 86 77 78 97 90 88 82 86 93 87 89 78 93 88...
USE R AND SHOW CODES!! The IQ was measured for 35 twins. Is there any difference...
USE R AND SHOW CODES!! The IQ was measured for 35 twins. Is there any difference in IQ between twins? DATA Twin 1 Twin 2 113 109 94 100 99 86 77 80 81 95 91 106 111 117 104 107 85 85 66 84 111 125 51 66 109 108 122 121 97 98 82 94 100 88 100 104 93 84 99 95 109 98 95 100 75 86 104 103 73 78 88 99 92 111 108...
An article in Cancer Research "Analyses of littermatched time-to-response data, with modifications for recovery of interlitter...
An article in Cancer Research "Analyses of littermatched time-to-response data, with modifications for recovery of interlitter information," (1977, Vol. 37, pp. 3863-3868) tested the tumorigenesis of a drug. A total of 41 rats were randomly selected from litters and given the drug. The times of tumor appearance were recorded as follows: 101, 104, 104, 77, 89, 88, 104, 96, 82, 70, 89, 91, 39, 103, 93, 85, 104, 104, 81, 67, 104, 104, 104, 87, 104, 89, 78, 104, 86,...
The following are the IQ scores of 60 students from a university. The histogram of the...
The following are the IQ scores of 60 students from a university. The histogram of the data is symmetric. 79 79 81 82 82 84 84 84 85 85 86 86 87 89 89 89 90 90 90 91 91 92 92 93 94 95 95 96 98 99 99 102 102 102 103 104 104 104 105 106 106 106 108 109 109 110 111 111 113 113 113 115 117 117 120 121 123 124 125 130 a....
1. The data are from the U.S. Department of Health and Human Services, National Center of...
1. The data are from the U.S. Department of Health and Human Services, National Center of Health Statistics, Third National Health and Nutrition Examination Survey. The systolic blood pressure (mmHg) for 80 patients was measured. The following data is separated by gender Females: 89 92 93 93 94 95 97 98 99 100 101 102 104 104 104 105 106 106 107 107 107 108 108 110 112 113 113 114 114 116 116 118 119 123 124 125 127...
Use minitab if possible. If it is, please show step by step process of how you...
Use minitab if possible. If it is, please show step by step
process of how you did it.
Surface roughness of steel is investigated. The method of surface manufacturing largely determines roughness of the surface. One of the parameters to describe the roughness is Rz, the maximum height of the surface irregularities profile. R (in um) is measured for 21 random places on the surface of forged details and 21 random places on the surface of casted details as follows....
Terrance is age 71 and retired. Beginning in 2018, he must start taking minimum distributions from his IRA account that had a balance of $150,000 as of December 31, 2017, Make these three assumptions...
Terrance is age 71 and retired. Beginning in 2018, he must start taking minimum distributions from his IRA account that had a balance of $150,000 as of December 31, 2017, Make these three assumptions: His IRA will earn 8% per year, he will withdraw the minimum distribution on the last day of each calendar year, and only one distribution will be taken in 2018. Calculate the amount of his distribution for years 2018 through 2022 and the ending balance in...
How do I plot a series graph with this data provided? Month 1987 1988 1989 1990...
How do I plot a series graph with this data provided? Month 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 Jan 95 104 101 88 132 125 111 127 119 147 Feb 94 100 96 110 109 118 123 129 147 146 Mar 98 99 82 129 101 121 121 132 164 133 Apr 96 88 84 113 111 140 139 108 135 148 May 95 89 85 114 140 141 119 115 124 141 Jun 115 108...
weight of 30 people:
81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96,
97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110
screenshot of matlab is needed, please and thank you
Create your own data that represents the weight of 30 people.Test the null hypothesis that the data comes from a normal distribution with mean mu = 70 and standard deviation sigma = 8. Hint: use the “ztest"...
An article in Cancer Research "Analyses of littermatched time-to-response data, with modifications for recovery of interlitter information," (1977, Vol. 37, pp. 3863-3868) tested the tumorigenesis of a drug. A total of 41 rats were randomly selected from litters and given the drug. The times of tumor appearance were recorded as follows: 101, 104, 104, 77, 89, 88, 104, 96, 82, 70, 89, 91, 39, 103, 93, 85, 104, 104, 81, 67, 104, 104, 104, 87, 104, 89, 78, 104, 86,...
1. The data are from the U.S. Department of Health and Human Services, National Center of Health Statistics, Third National Health and Nutrition Examination Survey. The systolic blood pressure (mmHg) for 80 patients was measured. The following data is separated by gender Females: 89 92 93 93 94 95 97 98 99 100 101 102 104 104 104 105 106 106 107 107 107 108 108 110 112 113 113 114 114 116 116 118 119 123 124 125 127...
Use minitab if possible. If it is, please show step by step
process of how you did it.
Surface roughness of steel is investigated. The method of surface manufacturing largely determines roughness of the surface. One of the parameters to describe the roughness is Rz, the maximum height of the surface irregularities profile. R (in um) is measured for 21 random places on the surface of forged details and 21 random places on the surface of casted details as follows....
Terrance is age 71 and retired. Beginning in 2018, he must start taking minimum distributions from his IRA account that had a balance of $150,000 as of December 31, 2017, Make these three assumptions: His IRA will earn 8% per year, he will withdraw the minimum distribution on the last day of each calendar year, and only one distribution will be taken in 2018. Calculate the amount of his distribution for years 2018 through 2022 and the ending balance in...
Most questions answered within 3 hours.
-
During Heaton Company’s first two years of operations, it
reported absorption costing net operating income as...
asked 10 minutes ago -
Consider testing the
hypotheses:
H0: p = 0.56
H1: p > 0.56
where p is
the...
asked 13 minutes ago -
In a two-factor analysis of variance a main effect is defined as
____.
a. the unique...
asked 21 minutes ago -
A bank's loan officer rates applicants for credit. The ratings
are normally distributed with a mean...
asked 21 minutes ago -
Fill in the following information for Adipic Acid: molecular
weight, g or ml, mole, melting point,...
asked 26 minutes ago -
how
to use a for loop to iterate over the string below and print each
character...
asked 28 minutes ago -
Please type answer, Thanks.
Respond to the following in a minimum of 175
words:
Research industry...
asked 28 minutes ago -
Assume that all interest rates in the economy increase from 9
percent to 10 percent. Which...
asked 38 minutes ago -
Describe the function of a Change Control Board.
When calculating Planned Value (PV), what is the...
asked 44 minutes ago -
The customer help center in your company receives calls from
customers who need help with some...
asked 55 minutes ago -
A manufacturer wished to compare the wearing qualities of two
different types of automobile tires, A...
asked 53 minutes ago -
Write a MATLAB script file that will sum all the positive
entries in V and stop...
asked 1 hour ago