Assume that a sample is used to estimate a population mean u. Find the 98% confidence interval for a sample of size 821 with a mean of 56.7 and a standard deviation of 17.5. Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).

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Assume that a sample is used to estimate a population mean u. Find the 98% confidence interval for
a sample of size 821 with a mean of 56.7 and a standard deviation of 17.5. Enter your answer as a
tri-linear inequality accurate to one decimal place (because the sample statistics are reported
accurate to one decimal place).
>t>
Answer should be obtained without any preliminary rounding. However, the critical value may be
rounded to 3 decimal places.
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Transcribed Image Text:History Bookmarks People Tab Window Help b My Questions | bartleby W How To Delete Bartleby Accour X + om/courses/20952/assignments/284250 Assume that a sample is used to estimate a population mean u. Find the 98% confidence interval for a sample of size 821 with a mean of 56.7 and a standard deviation of 17.5. Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). >t> Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places. Question Help: Message instructor Submit Question Ост 1,454 étv 26 MacBook Air
Expert Solution
Step 1

Given:

Statistics homework question answer, step 1, image 1

Statistics homework question answer, step 1, image 2

Statistics homework question answer, step 1, image 3

As the value of population standard deviation is not known, we will use t-distribution.

The degrees of freedom can be calculated as:

Statistics homework question answer, step 1, image 4

The critical t-value for 0.02 and degrees of freedom

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