The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is less than 1.7 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.01. Complete parts (a) through (d) a.Identify the null and alternative hypothesis Ho: HA: b. Compute the test statistic X2=____(Round to 2 decimal places as needed) c. Find the P-value of the test statistic The P-value of the test statistic is___(Round to 3 decimal places as needed) d. Does the use of the single line appear to reduce the variation among waiting times? There____sufficient evidence to conclude that the single line reduced the variation among waiting times because Ho is____by the hypothesis test
The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is less than 1.7 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.01. Complete parts (a) through (d)
a.Identify the null and alternative hypothesis
Ho:
HA:
b. Compute the test statistic
X2=____(Round to 2 decimal places as needed)
c. Find the P-value of the test statistic
The P-value of the test statistic is___(Round to 3 decimal places as needed)
d. Does the use of the single line appear to reduce the variation among waiting times?
There____sufficient evidence to conclude that the single line reduced the variation among waiting times because Ho is____by the hypothesis test
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