The accompanying data table lists measured voltage amounts supplied directly to a family’s home. The power supply company states that it has a target power supply of 120 volts. Using these home voltage amounts, test the claim that the mean is 120 volts. Use a 0.05 significance level. Calculate the test statistic.

At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get our expert's

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this and thousands of other questions.

A community for students.

The accompanying data table lists measured voltage amounts supplied directly to a family’s home. The power supply company states that it has a target power supply of 120 volts. Using these home voltage amounts, test the claim that the mean is 120 volts. Use a 0.05 significance level. Calculate the test statistic.

Statistics
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this and thousands of other questions

No one can help if you don't provide all the relevant info.
Day Volts Day Volts 1 124.5 21 124.0 2 123.9 22 123.9 3 123.9 23 123.6 4 123.8 24 124.2 5 123.4 25 123.4 6 123.3 26 123.4 7 123.3 27 123.4 8 123.6 28 123.4 9 123.5 29 123.3 10 124.1 30 124.4 11 123.5 31 123.5 12 123.7 32 123.6 13 124.1 33 123.8 14 123.7 34 123.9 15 123.9 35 123.9 16 124.0 36 123.8 17 124.2 37 123.9 18 123.8 38 123.7 19 123.8 39 123.8 20 123.8 40 123.8
Ugh, this isn't an incredibly user-friendly format... Anyway, the first thing to do is compute the mean of the sample, so take the average of the "Volts" data (see the pic below). We'll use a \(Z\) test to compare this sample mean to the predicted mean. \[Z=\frac{123.763-120}{0.295858}\approx12.7\]
1 Attachment

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

If you're at all familiar with the standard normal distribution, the conclusion should be obvious, but if you're not, consult a table of \(z\) scores, like the one linked here: http://www.rochester.edu/college/psc/clarke/201/ztable2.jpg Notice that our calculated \(Z\) is not even listed.

Not the answer you are looking for?

Search for more explanations.

Ask your own question