answer neatly and correctly
please!
Homework Answers
The statistic software output for this problem is:
Null : H0 : μ = 675
Alternative : HA : μ < 675
Test statistics = -1.155
Critical value = -1.796
No
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answer neatly and correctly
please!
A rental agent claims that the mean monthly rent, u, for...
A rental agent claims that the mean monthly rent, H, for apartments on the east side...
A rental agent claims that the mean monthly rent, H, for apartments on the east side of town is less than $675. A random sample of 16 monthly rents for apartments on the east side has a mean of $673, with a standard deviation of $19. If we assume that the monthly rents for apartments on the east side are normally distributed, is there enough evidence to conclude, at the 0.05 level of significance, that u is less than $675?...
A rental agent claims that the mean monthly rent, H, for apartments on the east side...
A rental agent claims that the mean monthly rent, H, for apartments on the east side of town is less than $650. A random sample of 12 monthly rents for apartments on the east side has a mean of $646, with a standard deviation of $19. If we assume that the monthly rents for apartments on the east side are normally distributed, is there enough evidence to conclude, at the 0.1 level of significance, that he is less than $6507...
Where it says “the type of test statistic , choose one) the options are Z, t...
Where it says “the type of test statistic , choose one) the
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101T 2019 (2192 Time Remoining 109:45 Qui 6 Chapters & n 3 of 8 A rental agent claims that the mean monthly rent, u, for apartments on the east side of town is less than $700. A random sample of 19 monthly rents for apartments on the east side has a mean of $690, with a...
A laboratory claims that the mean sodium level, u, of a healthy adult is 138 mEq...
A laboratory claims that the mean sodium level, u, of a healthy adult is 138 mEq per liter of blood. To test this claim, a random sample of 70 adult patients is evaluated. The mean sodium level for the sample is 134 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 13 mEq. Can we conclude, at the 0.05 level of significance, that the population mean adult sodium level differs from...
answer neatly and correctly please! A recent study at a local college claimed that the proportion,...
answer neatly and correctly
please!
A recent study at a local college claimed that the proportion, p, of students who commute more than fifteen miles to school is no more than 20%. If a random sample of 270 students at this college is selected, and it is found that 58 commute more than fifteen miles to school, can we reject the college's claim at the 0.05 level of significance? Perform a one-tailed test. Then fill in the table below. Carry...
A manufacturer claims that the mean lifetime, u, of its light bulbs is 52 months. The...
A manufacturer claims that the mean lifetime, u, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 50 months. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 52 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at...
please answer neatly and correctly! A personal computer manufacturer is interested in comparing assembly times for...
please answer neatly and correctly!
A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Assembly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random sample of 8 workers and timing each worker on each assembly process. Half of the workers are chosen at random to use Process 1 first, and the rest use Process 2 first. For each worker and each process, the...
answer neatly and correctly please! It seems these days that college graduates who are employed full-time...
answer neatly and correctly
please!
It seems these days that college graduates who are employed full-time work more than 40-hour weeks. Data are available that can help us decide if this is true. A survey was recently sent to a group of adults selected at random. There were 9 respondents who were college graduates employed full-time. The mean number of hours worked per week by these 9 respondents was 43 hours, with a standard deviation of 9 hours. . Can...
Please answer neatly and correctly! last one was answered wrong! and the critical value is at...
Please answer neatly and correctly! last one was answered wrong!
and the critical value is at 0.01! please double check answer
Past records suggest that the mean annual income, u of teachers in state of Illinois is less than or equal to the mean annual income, u, of teachers in Massachusetts. In a current study, a random sample of 10 teachers from Illinois and an independent random sample of 10 teachers from Massachusetts have been asked to report their mean...
Please answer neatly and correctly! A purchasing manager for a large university is investigating which brand...
Please answer neatly and correctly!
A purchasing manager for a large university is investigating which brand of LCD projector to purchase to equip "smart" classrooms. Of major concern is the longevity of the light bulbs used in the projectors. The purchasing manager has narrowed down the choice of projector to two brands, Infocus and Proxima, and wishes to determine if there is any difference between the two brands in the mean lifetime of the bulbs used. The purchasing manager obtained...
A rental agent claims that the mean monthly rent, H, for apartments on the east side of town is less than $675. A random sample of 16 monthly rents for apartments on the east side has a mean of $673, with a standard deviation of $19. If we assume that the monthly rents for apartments on the east side are normally distributed, is there enough evidence to conclude, at the 0.05 level of significance, that u is less than $675?...
A rental agent claims that the mean monthly rent, H, for apartments on the east side of town is less than $650. A random sample of 12 monthly rents for apartments on the east side has a mean of $646, with a standard deviation of $19. If we assume that the monthly rents for apartments on the east side are normally distributed, is there enough evidence to conclude, at the 0.1 level of significance, that he is less than $6507...
Where it says “the type of test statistic , choose one) the
options are Z, t , Chi square , F . Thank you!
101T 2019 (2192 Time Remoining 109:45 Qui 6 Chapters & n 3 of 8 A rental agent claims that the mean monthly rent, u, for apartments on the east side of town is less than $700. A random sample of 19 monthly rents for apartments on the east side has a mean of $690, with a...
A laboratory claims that the mean sodium level, u, of a healthy adult is 138 mEq per liter of blood. To test this claim, a random sample of 70 adult patients is evaluated. The mean sodium level for the sample is 134 mEq per liter of blood. It is known that the population standard deviation of adult sodium levels is 13 mEq. Can we conclude, at the 0.05 level of significance, that the population mean adult sodium level differs from...
answer neatly and correctly
please!
A recent study at a local college claimed that the proportion, p, of students who commute more than fifteen miles to school is no more than 20%. If a random sample of 270 students at this college is selected, and it is found that 58 commute more than fifteen miles to school, can we reject the college's claim at the 0.05 level of significance? Perform a one-tailed test. Then fill in the table below. Carry...
A manufacturer claims that the mean lifetime, u, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 50 months. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 52 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at...
please answer neatly and correctly!
A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Assembly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random sample of 8 workers and timing each worker on each assembly process. Half of the workers are chosen at random to use Process 1 first, and the rest use Process 2 first. For each worker and each process, the...
answer neatly and correctly
please!
It seems these days that college graduates who are employed full-time work more than 40-hour weeks. Data are available that can help us decide if this is true. A survey was recently sent to a group of adults selected at random. There were 9 respondents who were college graduates employed full-time. The mean number of hours worked per week by these 9 respondents was 43 hours, with a standard deviation of 9 hours. . Can...
Please answer neatly and correctly! last one was answered wrong!
and the critical value is at 0.01! please double check answer
Past records suggest that the mean annual income, u of teachers in state of Illinois is less than or equal to the mean annual income, u, of teachers in Massachusetts. In a current study, a random sample of 10 teachers from Illinois and an independent random sample of 10 teachers from Massachusetts have been asked to report their mean...
Please answer neatly and correctly!
A purchasing manager for a large university is investigating which brand of LCD projector to purchase to equip "smart" classrooms. Of major concern is the longevity of the light bulbs used in the projectors. The purchasing manager has narrowed down the choice of projector to two brands, Infocus and Proxima, and wishes to determine if there is any difference between the two brands in the mean lifetime of the bulbs used. The purchasing manager obtained...
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