A random sample of 17 health maintenance organizations (HMOs) was selected. For each HMO, the co-payment (in dollars) for a doctor's office visit was recorded. The results are as follows.49,56,52,51,26,27, 57, 49, 48, 31, 42, 39, 31, 30, 44,45, 29Send data to calculator Send data to ExcelUnder the assumption that co-payment amounts are normally distributed, find a 90% confidence interval for the mean co-payment amount in dollars. Give the lower limit and upper limit of the 90% confidence interval.Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)Lower limit: Upper limit: A random sample of 17 health maintenance organizations (HMOs) was selected. For each HMO, the co-payment (in dollars) for a doctor's office visit was recorded. The results are as follows.49, 56, 52, 51, 26, 27, 57, 49, 48, 31, 42, 39, 31, 30, 44, 45, 29Send data to calculatorSend data to ExcelUnder the assumption that co-payment amounts are normally distributed, find a 90% confidence interval for the mean co-payment amount in dollars. Give the lower limit and upper limit of the 90% confidence interval.Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)Lower limit: Upper limit:

Enter the data in Excel as follows:The confidence limit is 90%.In this case, the parameter of…

Answered: A random sample of 17 health…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.2: Representing Data

Problem 22PFA

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Question

A random sample of
17
health maintenance organizations (HMOs) was selected. For each HMO, the co-payment (in dollars) for a doctor's office visit was recorded. The results are as follows.
49,56,52,51,26,27, 57, 49, 48, 31, 42, 39, 31, 30, 44,45, 29
Send data to calculator

Send data to Excel
Under the assumption that co-payment amounts are normally distributed, find a
90%
confidence interval for the mean co-payment amount in dollars. Give the lower limit and upper limit of the
90%
confidence interval.

Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)

Lower limit:

Upper limit:

A random sample of

health maintenance organizations (HMOs) was selected. For each HMO, the co-payment (in dollars) for a doctor's office visit was recorded. The results are as follows.

Send data to calculator

Send data to Excel

Under the assumption that co-payment amounts are normally distributed, find a

90%

confidence interval for the mean co-payment amount in dollars. Give the lower limit and upper limit of the

90%

confidence interval.

Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)

Lower limit:
Upper limit:

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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