Mae uses a device to measure the temperature of a solution. Due to a fault in the device, the measured temperature varies by as
much as 3° F from the true temperature, 2° F, of the solution.
Select the correct inequality and number line that model the situation above.
Select the correct inequality and number line that model the situation above.
1 answer:
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Answer:
Yes. The male and female consumers differ in the amounts they spend.
Step-by-step explanation:
We can express the null and alternative hypothesis as:
It is assumed a significance level of 0.05.
The standard deviation of the difference of means is calculated as:
The test statistic is
The degrees of freedom are:
The P-value for t=10.11 is P=0, so it is smaller than the significance level. The null hypothesis is rejected.
We can conclude that male and female consumers differ in the amounts they spend.