The deli serves 7 kinds of meat and 5 kinds of bread. How many different kinds of sandwiches made of one meat and one bread are
1 answer:
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, and we will be solving for x. (3.25=325%)
For this equation, all you have to do is divide each side by 3.25, and your answer is gonna be
gallons.
For this equation, all you have to do is divide each side by 3.25, and your answer is gonna be
Answer:
We conclude that we fail to reject as there is not sufficient evidence to warrant support of the claim that less than 10 percent of the test results are wrong.
Step-by-step explanation:
We are given that among 317 tested subjects, results from 25 subjects were wrong.
We have to test the claim that less than 10 percent of the test results are wrong.
<u><em>Let p = proportion of subjects that were wrong.</em></u>
So, Null Hypothesis, : p = 10% {means that 10 percent of the test results are wrong}
Alternate Hypothesis, : p < 10% {means that less than 10 percent of the test results are wrong}
The test statistics that would be used here <u>One-sample z proportion</u> <u>statistics</u>;
T.S. = ~ N(0,1)
where, = sample proportion of test results that were wrong =
= 0.08
n = sample of tested subjects = 317
So, <u><em>test statistics</em></u> =
= -1.31
The value of z test statistics is -1.31.
Now, the P-value of the test statistics is given by the following formula;
P-value = P(Z < -1.31) = 1 - P(Z 1.31)
= 1 - 0.9049 = <u>0.095</u>
<u><em>Now, at 0.05 significance level the z table gives critical value of -1.645 for left-tailed test.</em></u><em> Since our test statistics is more than the critical value of z as -1.31 > -1.645, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which </em><em><u>we fail to reject our null hypothesis</u></em><em>.</em>
Therefore, we conclude that we fail to reject as there is not sufficient evidence to warrant support of the claim that less than 10 percent of the test results are wrong.