A report states that adults 18- to 24- years-old send and receive 128 texts every day. Suppose we take a sample of 25- to 34-year-olds to see if their mean number of daily texts differs from the mean for 18- to 24-year-olds. (a) State the null and alternative hypotheses we should use to test whether the population mean daily number of texts for 25- to 34-year-olds differs from the population daily mean number of texts for 18- to 24-year-olds. (Enter != for as needed.) Ho: H₂: (b) Suppose a sample of thirty 25- to 34-year-olds showed a sample mean of 118.1 texts per day. Assume a population standard deviation of 33.17 texts per day. Compute the p-value. (Round your answer to four decimal places.) p-value = (c) With a = 0.05 as the level of significance, what is your conclusion? O Do not reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds. O Do not reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds. O Reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds. O Reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds.
A report states that adults 18- to 24- years-old send and receive 128 texts every day. Suppose we take a sample of 25- to 34-year-olds to see if their mean number of daily texts differs from the mean for 18- to 24-year-olds. (a) State the null and alternative hypotheses we should use to test whether the population mean daily number of texts for 25- to 34-year-olds differs from the population daily mean number of texts for 18- to 24-year-olds. (Enter != for as needed.) Ho: H₂: (b) Suppose a sample of thirty 25- to 34-year-olds showed a sample mean of 118.1 texts per day. Assume a population standard deviation of 33.17 texts per day. Compute the p-value. (Round your answer to four decimal places.) p-value = (c) With a = 0.05 as the level of significance, what is your conclusion? O Do not reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds. O Do not reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds. O Reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds. O Reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts for 18- 24-year-olds.
MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Transcribed Image Text:A report states that adults 18- to 24- years-old send and receive 128 texts every day. Suppose we take a sample of 25- to 34-year-olds to see if their mean number
of daily texts differs from the mean for 18- to 24- year-olds.
(a) State the null and alternative hypotheses we should use to test whether the population mean daily number of texts for 25- to 34-year-olds differs from the
population daily mean number of texts for 18- to 24-year-olds. (Enter != for as needed.)
Ho
Ha
(b) Suppose a sample of thirty 25- to 34-year-olds showed a sample mean of 118.1 texts per day. Assume a population standard deviation of 33.17 texts per day.
Compute the p-value. (Round your answer to four decimal places.)
p-value =
(c) With a = 0.05 as the level of significance, what is your conclusion?
Do not reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128
daily texts for 18- 24-year-olds.
O Do not reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily
texts for 18- 24-year-olds.
O Reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts
for 18- 24-year-olds.
O Reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts
for 18- 24-year-olds.
TNC
9:09 AM
Transcribed Image Text:Introduction: the Ea...
Forgotten password TED https://www.ted.co.. Th Frame work
Repeat the preceding hypothesis test using the critical value approach.
State the null and alternative hypotheses. (Enter != for as needed.)
Ho:
H₂:
Find the value of the test statistic. (Round your answer to two decimal places.)
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State the critical values for the rejection rule. (Use a = 0.05. Round your answer to two decimal places. If the test is one-tailed, enter NONE for the unused tail.)
test statistic S
test statistic >
State your conclusion.
O Do not reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128
daily texts for 18- 24-year-olds.
20
O Do not reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily
texts for 18- 24-year-olds.
HE
O Reject Ho. We can conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts
for 18- 24-year-olds.
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O Reject Ho. We cannot conclude that the population mean daily texts for 25- to 34-year-olds differs significantly from the population mean of 128 daily texts
for 18-24-year-olds.
ENG
US
9:10 AM
2022-12-05
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