Question
The National Cable and Telecommunications Association recently reported that the mean number of HDTVs per household in the United States is 2.30 with a standard
The National Cable and Telecommunications Association recently reported that the mean number of HDTVs per household in the United States is 2.30 with a standard deviation of 1.474 sets. A sample of 100 homes in Boise, Idaho, revealed the following sample information.
Number of HDTVs Number of Households
0 7
1 27
2 28
3 18
4 10
5 or more 10
Total 100
At the .05 significance level, is it reasonable to conclude that the number of HDTVs per household follows a normal distribution? (Hint: Use limits such as 0.5 up to 1.5, 1.5 up to 2.5, and so on.)
State the decision rule. Use 0.05 significance level.(Round your answer to 3 decimal places.)
H0: The population of television sets follows a normal distribution.H1: The population of television sets does not follow a normal distribution.
RejectH0if2>
Compute the value of chi-square.(Round your answer to 4 decimal places.)
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