TextRequest reports that adults 18 - 24 years old send and receive 128 texts every day. Suppose we take a sample of 25 -34 year olds to see if their mean number of daily texts differs from the mean for 18-24 year olds reported by TextRequest. a. Select the null hypothesis we should use to test whether the population mean daily number of texts for 25-34 year olds differs from the population daily mean number of texts for 18 - 24 year olds. 1. Ho: H= 128 2. Ho: u + 128 3. Ho: µ > 128 Select your answer - V Select the alternative hypothesis we should use to test whether the population mean daily number of texts for 25-34 year olds differs from the population daily mean number of texts for 18 - 24 year olds. 1. Ha: u# 128 2. Ha: µ = 128 3. H: u > 128 - Select your answer - b. Suppose a sample of thirty 25 - 34 year olds showed a sample mean of 118.6 texts per day. Assume a population standard deviation of 33.17 texts per day and compute the p-value. Round your answer to four decimal places. c. With a = 0.05 as the level of significance, what is your conclusion? v Ho. We Select your answer - v conclude that the population mean daily texts for 25 - 34 year olds differs significantly from the population Select your answer mean of 128 daily texts for 18-24 year olds.
TextRequest reports that adults 18 - 24 years old send and receive 128 texts every day. Suppose we take a sample of 25 -34 year olds to see if their mean number of daily texts differs from the mean for 18-24 year olds reported by TextRequest. a. Select the null hypothesis we should use to test whether the population mean daily number of texts for 25-34 year olds differs from the population daily mean number of texts for 18 - 24 year olds. 1. Ho: H= 128 2. Ho: u + 128 3. Ho: µ > 128 Select your answer - V Select the alternative hypothesis we should use to test whether the population mean daily number of texts for 25-34 year olds differs from the population daily mean number of texts for 18 - 24 year olds. 1. Ha: u# 128 2. Ha: µ = 128 3. H: u > 128 - Select your answer - b. Suppose a sample of thirty 25 - 34 year olds showed a sample mean of 118.6 texts per day. Assume a population standard deviation of 33.17 texts per day and compute the p-value. Round your answer to four decimal places. c. With a = 0.05 as the level of significance, what is your conclusion? v Ho. We Select your answer - v conclude that the population mean daily texts for 25 - 34 year olds differs significantly from the population Select your answer mean of 128 daily texts for 18-24 year olds.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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TextRequest reports that adults 18 - 24 years old send and receive 128 texts every day. Supposé we take a sample of 25 – 34 year olds to see if their mean number of daily
texts differs from the mean for 18 - 24 year olds reported by TextRequest.
a. Select the null hypothesis we should use to test whether the population mean daily number of texts for 25 - 34 year olds differs from the population daily mean number
of texts for 18 - 24 year olds.
1. Ho: µ = 128
2. Ho: µ# 128
3. Ho: µ > 128
- Select your answer -
Select the alternative hypothesis we should use to test whether the population mean daily number of texts for 25 - 34 year olds differs from the population daily mean
number of texts for 18 – 24 year olds.
1. H: µ # 128
2. Ha: µ = 128
3. Ha: µ> 128
- Select your answer
b. Suppose a sample of thirty 25 – 34 year olds showed a sample mean of 118.6 texts per day. Assume a population standard deviation of 33.17 texts per day and compute
the p-value. Round your answer to four decimal places.
c. With a = 0.05 as the level of significance, what is your conclusion?
Select your answer - v Ho. We
conclude that the population mean daily texts for 25 – 34 year olds differs significantly from the population
Select your answer
mean of 128 daily texts for 18 - 24 year olds.
d. Repeat the preceding hypothesis test using the critical value approach.
The critical value(s) is(are)
Select your answer - v
Can it be concluded that the population mean differs from 128?
Select your answer
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3/31/2021
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