Question

A tool manufacturer claims that the tool life of his tools is not less than 50 minutes. A random samples of 16 cutting tool made from A company and tested indicated an average tool life of 56 minutes with a standard deviation of 5 minutes. Please test whether or not the company's claims is true, find out to value. Here since the sample size is less than 30, use the t-statistic. Also use alfa value=0.05. Ho:$\mu\leq$50 minutes, H1:$\mu\geq$50 minutes. a. to=4.8 b. to=2.1 c. to=9.1 d. to=5.0 e. to=7.7 

          A tool manufacturer claims that the tool life of his tools is not less than 50 minutes. A random samples of 16 cutting tool made from A company and tested indicated an average tool life of 56 minutes with a standard deviation of 5 minutes. Please test whether or not the company's claims is true, find out to value. Here since the sample size is less than 30, use the t-statistic. Also use alfa value=0.05. Ho:$\mu\leq$50 minutes, H1:$\mu\geq$50 minutes.
a. to=4.8
b. to=2.1
c. to=9.1
d. to=5.0
e. to=7.7
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A tool manufacturer claims that the tool life of his tools is not less than 50 minutes. A random samples of 16 cutting tool made from A company and tested indicated an average tool life of 56 minutes with a standard deviation of 5 minutes. Please test whether or not the company's claims is true, find out to value. Here since the sample size is less than 30, use the t-statistic. Also use alfa value=0.05. Ho:μ≤50 minutes, H1:μ≥50 minutes. a. to=4.8 b. to=2.1 c. to=9.1 d. to=5.0 e. to=7.7

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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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A tool manufacturer claims that the tool life of his tools is not less than 50 minutes. A random sample of 16 cutting tools made from Company A was tested, indicating an average tool life of 56 minutes with a standard deviation of 5 minutes. Please test whether or not the company's claim is true and find the t-value. Since the sample size is less than 30, we will use the t-statistic. Also, use an alpha value of 0.05. Ho: 50 minutes, H1: 50 minutes a. t0 = 4.8 b. t0 = 2.1 c. t0 = 9.1 d. t0 = 5.0 e. t0 = 7.7
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Transcript

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00:01 Hello, here manufacturer claims that the mean time to assemble table saw is 80 minutes with a standard deviation of 40 minutes.
00:18 Sample of 64 is chosen and we have to find probability that the mean is greater than 88 minutes.
00:25 Let's calculate that score.
00:34 Now let's calculate it.
00:43 That's 1 .6.
00:44 Then this probability equals to probability of that being greater than 1 .6...
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