lenovoStati X+books/9780357118191/cfi/475!/4/4@0.00:10.6I Cmarie II your arcaspend on child care per week differs from the reported mean of 6.4 hours per week.A sample of 40 married couples will be used with the data collected showing thehours per week the husband spends on child care. The sample data are contained inthe file ChildCare.a. What are the hypotheses if your group would like to determine if the populationmean number of hours married men are spending in child care differs from themean reported by Time in your area?b. What is the sample mean and the p-value?c. Select your own level of significance. What31. Chocolate Consumption. The United States ranks ninth in the world in per capitachocolate consumption; Forbes reports that the average American eats 9.5 poundsof chocolate annually. Suppose you are curious whether chocolate consumption ishigher in Hershey, Pennsylvania, the location of the Hershey Company's corporateheadquarters. A sample of 36 individuals from the Hershey area showeda samplemean annual consumption of 10.05 pounds and a standard deviation of s 1.5pounds. Using a =annual consumption of chocolate is higher in Hershey than it is throughout theyour conclusion?.05, do the sample results support the conclusion that mean32. Used Car Prices. According to the National Automobile Dealers Association, themean price for used cars is $10,192. A manager of a Kansas City used car dealer-ship reviewed a sample of 50 recent used car sales at the dealership in an attempt todetermine whether the population mean price for used cars at this particular dealershipdiffered from the national mean. The prices for the sample of 50 cars are shown in thefile UsedCars.United States?a. Formulate the hypotheses that can be used to determine whether a difference existsin the mean price for used cars at the dealership.b. What is the p-value?We've updatGi中 Aa23e

Question
Asked Oct 29, 2019

Problem 31

lenovo
Stati X
+
books/9780357118191/cfi/475!/4/4@0.00:10.6
I Cmarie II your arca
spend on child care per week differs from the reported mean of 6.4 hours per week.
A sample of 40 married couples will be used with the data collected showing the
hours per week the husband spends on child care. The sample data are contained in
the file ChildCare.
a. What are the hypotheses if your group would like to determine if the population
mean number of hours married men are spending in child care differs from the
mean reported by Time in your area?
b. What is the sample mean and the p-value?
c. Select your own level of significance. What
31. Chocolate Consumption. The United States ranks ninth in the world in per capita
chocolate consumption; Forbes reports that the average American eats 9.5 pounds
of chocolate annually. Suppose you are curious whether chocolate consumption is
higher in Hershey, Pennsylvania, the location of the Hershey Company's corporate
headquarters. A sample of 36 individuals from the Hershey area showeda sample
mean annual consumption of 10.05 pounds and a standard deviation of s 1.5
pounds. Using a =
annual consumption of chocolate is higher in Hershey than it is throughout the
your conclusion?
.05, do the sample results support the conclusion that mean
32. Used Car Prices. According to the National Automobile Dealers Association, the
mean price for used cars is $10,192. A manager of a Kansas City used car dealer-
ship reviewed a sample of 50 recent used car sales at the dealership in an attempt to
determine whether the population mean price for used cars at this particular dealership
differed from the national mean. The prices for the sample of 50 cars are shown in the
file UsedCars.
United States?
a. Formulate the hypotheses that can be used to determine whether a difference exists
in the mean price for used cars at the dealership.
b. What is the p-value?
We've updat
Gi
中 Aa
23
e
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lenovo Stati X + books/9780357118191/cfi/475!/4/4@0.00:10.6 I Cmarie II your arca spend on child care per week differs from the reported mean of 6.4 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week the husband spends on child care. The sample data are contained in the file ChildCare. a. What are the hypotheses if your group would like to determine if the population mean number of hours married men are spending in child care differs from the mean reported by Time in your area? b. What is the sample mean and the p-value? c. Select your own level of significance. What 31. Chocolate Consumption. The United States ranks ninth in the world in per capita chocolate consumption; Forbes reports that the average American eats 9.5 pounds of chocolate annually. Suppose you are curious whether chocolate consumption is higher in Hershey, Pennsylvania, the location of the Hershey Company's corporate headquarters. A sample of 36 individuals from the Hershey area showeda sample mean annual consumption of 10.05 pounds and a standard deviation of s 1.5 pounds. Using a = annual consumption of chocolate is higher in Hershey than it is throughout the your conclusion? .05, do the sample results support the conclusion that mean 32. Used Car Prices. According to the National Automobile Dealers Association, the mean price for used cars is $10,192. A manager of a Kansas City used car dealer- ship reviewed a sample of 50 recent used car sales at the dealership in an attempt to determine whether the population mean price for used cars at this particular dealership differed from the national mean. The prices for the sample of 50 cars are shown in the file UsedCars. United States? a. Formulate the hypotheses that can be used to determine whether a difference exists in the mean price for used cars at the dealership. b. What is the p-value? We've updat Gi 中 Aa 23 e

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Expert Answer

Step 1

The null and alternative hypotheses are given below:

Ho u9.5
H 9.5
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Ho u9.5 H 9.5

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Step 2

Test statistic:

The test statistics is obt...

Sample mean Hypothesi zed value of population mean
Standard deviation
t=
10.05 9.5
1.5
36
= 2.20
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Sample mean Hypothesi zed value of population mean Standard deviation t= 10.05 9.5 1.5 36 = 2.20

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