Question 746434
1) Identify the sample space of the probability experiment and determine the number of outcomes in the sample space,
Guessing the last digit in the price of a TV.
The sample space is: The whole numbers 0 thru 9
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There are as many single digits as there are TV prices in the sample space 
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2) Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. z= .54 
Note: You need to describe the shaded area.
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3) Find the p value for a left tailed hypothesis test with a test statistic of z= -1.23.
Ans P(z < -1.23) = 0.1093
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Decide weather to reject Ho if the level of significance is alpha =.10.
Ans: Since the p-value is greater than 10%, fail to reject Ho.
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4) Is achieving a basic skill level related to the location of the school? 
The results of a random sample of students by the location of school and the number of students achieving basic skill levels in three subjects is shown in the contingency table. At a alpha = .01, test the hypothesis that the variables are independent. 
subject 
location reading math science 
urban::::: 44::::50 ::::::30
suburban:: 66::: 68 ::::::54
Ho: row and column factors are independent
Ha: they are not independent
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I ran a Chi-Sq Test on the 2 by 2 data set and got the following results/
test statistic: Chi-Sq = 1234.67
p-value: 0 to 8 decimal places
df = 2

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Conclusion: Since the p-value is less than 1% reject Ho.
The row and column factors are not independent.
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Cheers,
Stan H.
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