(a) (100.5785, 111.4215)
(b) (101.3321, 110.6679)
(c) (99.7341, 112.2659)
(d) No, the population has to be normally distributed.
9.2.17 Question Help A simple random sample of size nis drawn from a population that is...
t-distribution Table -Distribution Area in Right Tail 0.025 0.02 df 0.25 0.20 0.15 0.10 0.05 0.01 0.005 0.0025 0.001 0.0005 3 6 1.000 1.3761.963 0.816 1.061 1.386 0.765 0.978 1.250 0.741 0.941 1.190 0.727 0.9201.156 0.718 0.906 1.134 0.7110.8961.119 0.706 0.889 1.108 0.703 0.883 1.100 0.700 0.879 1.093 0.697 0.876 1.088 0.695 0.873 1.083 0.694 0.870 1.079 0.692 0.868 1.076 0.691 0.866 1.074 0.690 0.865 1.071 0.689 0.863 1.069 0.688 0.862 1.067 0.688 0.861 1.066 3.078 1.886 1.638 1.533 1.476...
t-Distribution Area in Right Tail Degrees of Freedom 0.25 0.2 0.15 0.10 0.05 0.025 0.02 0.01 0.005 0.0025 0.001 0.0005 1 1.000 1.376 1.963 3.078 6.314 12.706 15.894 31.821 63.657 127.321 318.309 636.619 2 0.816 1.061 1.386 1.886 2.920 4.303 4.849 6.965 9.925 14.089 22.327 31.599 3 0.765 0.978 1.250 1.638 2.353 3.182 3.482 4.541 5.841 7.453 10.215 12.924 4 0.741 0.941 ...
(a) Is there a difference in the measurement of the muzzle velocity between device A and device B at the α = 0.01 level of significance? Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers. Let di = Ai − Bi. (i) Identify the null and alternative hypotheses. (ii) Determine the test statistic for this hypothesis test (t0 = ?). Round to two decimal places as needed. (iii)...
(a) Does the evidence suggest that community college transfer students take longer to attain a bachelor's degree? Use an α = 0.05 level of significance. Perform a hypothesis test. Determine the null and alternative hypotheses. (b) Determine the test statistic (t = ?) and the P-value (P = ?). Round to two decimal places as needed. (c) Construct a 90% confidence interval for (μcommunity college − μno transfer) to approximate the mean additional time it takes to complete a bachelor's...
why is thr p value 0.001 if the value falls off of the table and the greatest number is 3.965 so shouldnt jt be .0005? 1. Hutchinson-Gilford progeria syndrome is a rare genetic condition that produces rapid aging in children. In individuals with the syndrome, cardiovascular disease in a common cause of death in the teenage years. A clinical study examined the effect of treatment with the drug lonafarnib and measured the pulse wave velocity (PWV), an important component of...
T Distribution Table The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 25 people reveals the mean yearly consumption to be 82 gallons with a standard deviation of 24 gallons. Assume that the population distribution is normal. (Use Distribution Table.) a-1. What is the value of the population mean? 82 24 Unknown a-2. What is the best estimate of this value? Estimate population mean c. For a 90% confidence interval, what is the value...
Full data set Uncarpeted A researcher wanted to determine if carpeted or uncarpeted rooms contain more bacteria. The table shows the results for the number of bacteria per cubic foot for both types of rooms. A normal probability plot and boxplot indicate that the data are approximately normally distributed with no outliers. Do carpeted rooms have more bacteria than uncarpeted rooms at the α 0.01 level of significance? 1 Click the icon to view the Student t-distribution table 13. Carpeted...
92.19-T Question Help A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 18.3, and the sample standard deviation s, is found to be 5.6. (a) Construct a 90% confidence interval about if the sample size, n, is 31. (b) Construct a 90% confidence interval about μ if the sample size, n' is 61 . How does increasing the sample size affect the margin of error,...
Consider the following hypotheses: H0: μ ≤ 37.9 HA: μ > 37.9 A sample of 31 observations yields a sample mean of 39.3. Assume that the sample is drawn from a normal population with a population standard deviation of 4.2. Tables provided below z table or t table**** a-1. Find the p-value. 0.05 p-value < 0.10 p-value 0.10 p-value < 0.01 0.01 p-value < 0.025 0.025 p-value < 0.05 a-2. What is the conclusion if α = 0.01? Reject H0 since the p-value is...
Suppose a huge internet-based lighting company receives a shipment of several thousand boxes of light bulbs every Tuesday. Inspectors return the merchandise to the manufacturer if the proportion of damaged light bulbs is more than 0.06 (6%). Rather than inspect all of the packages, 100 boxes are randomly sampled. As long as at least 10 damaged and 10 undamaged light bulbs are found, a one-sample z-test is run with a significance level of 0.01 to see if the proportion of...