A. Perform a hypothesis test to test the claim that the
Hypotheses: Standardized Test Statistic: ____________
(show formula and your work)
B. On the sketch below, show the claimed mean and your sample mean, and shade the region for the p-value. Compute the p-value “manually” (show/explain your work; should not be using TESTS).
p-value = _______________________
Conclusion: _________________________
Interpretation (in context): TABLE
Temperature (in °F) / # of Adults
96.0-96.4/ 2
96.5-96.9/ 4
97.0-97.4/ 13
97.5-97.9/ 21
98.0-98.4/ 38
98.5-98.9/ 33
99.0-99.4/ 15
99.5-99.9/ 2
100.0-100.4/ 1
100.5-100.9/ 1
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps
- Make a chi square and evaluate the data statistically. Also breifly explain the results.arrow_forwardrength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days differs from the mean strength after six days? Let H, represent the mean strength after three days and P =H, -P. Use the a=0.01 level and the P-value method with the TI-84 Plus calculator. Block 1 4 After 3 days 1317 1363 1321 1333 1311 After 6 days 1382 1341 1327 1342 1386 Send data to Excel Part 1 of 4 (a) State the null and alternate hypotheses. H: This hypothesis test is a (Choose one) v test. Part 2 of 4 (b) Compute the P-value. Round the answer to at least four decimal places. P-value = Part 3 of 4 Determine whether to reject Ho. (Choose one) v the null hypothesis. Part 4 of 4 (c) State a conclusion. There (Choose one) v enough evidence to conclude that the mean strength after three days differs from the mean strength after six…arrow_forwardThe amount of trash generated by US households (in lbs per day) is normally distributed. You take a sample of 10 people. The sample average is xbar=10.91 lbs, and the sample standard deviation is s=4.736. What is the 99% Conf. Int. for the mean? Group of answer choices a. 6.04 to 15.78 b. 8.33 to 13.49 c. 8.09 to 13.73 d. 7.74 to 14.08arrow_forward
- Which of the following is consistent with what r2 represents as a measure of effect size? Group of answer choices the portion of variability in a sample attributable to a treatment effect relative to the total variability in the sample the portion of variability in a sample attributable to a treatment effect after correcting for sample size the statistical significance of a treatment effect the statistical significance of a treatment effect correcting for the alpha levelarrow_forwardLecture(8.6): In a statistic class 8 students took their pulse before and after writing a quiz to see if their mean pulse rate changed. A summary of the result is given below: Student 1 2 3 4 5 6 7 8 Pulse before: 98 87 74 75 85 96 85 70 Pulse after : 101 86 72 74 83 99 85 65 test the hypothsese at(alpha =.05) level of signifcancearrow_forwardThe data below represents the daily high temperature (in 0F) recorded at the Mount Washington Observatory in New Hampshire for the first 15 days of February 2021. Use the given data to answer questions 1 - 8. Source: https://www.mountwashington.org 15 21 25 16 21 14 13 -1 6 -2 -6 15 16 21 22 A. What is the first quartile Q1?___________________________ B. What is the third quartile Q3?_________________________ C. Calculate the range._________________ D. A typical data value lies how far from the mean? (Hints: Consider the computed standard deviation) ________________arrow_forward
- Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.05 to test for a difference between the weights of discarded paper (in pounds) and weights of discarded plastic (in pounds). In this example, Hd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the weight of discarded paper minus the weight of discarded plastic for a household. What are the null and alternative hypotheses for the hypothesis test? OA. Ho: Hd #0 H₁: Hd>0 O C. Ho: Hd #0 H₁: Hd=0 Identify the test statistic. t= (Round to two decimal places as needed.) B. Ho: Hd=0 H₁: Hd #0 O D. Ho: Hd = 0 H₁: Hd <0 More Info Household Paper 16.39 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 POTBRANN~~~~~~~ 7.57 11.42 6.44 20.12 2.41 6.05 2.80 13.61 13.05 17.65 8.72 6.16 7.72 7.98 6.38 6.67 6.98 29 11.08 5.86…arrow_forwardState the hypothesis and identify the claim. Find the critical and z-values.arrow_forwardIn a poll of 1500 adults in July 2010, 780 of those polled said that schools should ban sugary snacks and soft drinks. Complete parts a and b below. 1. Find the value of the test statistic z. z = _____ (Round to two decimal places as needed.) 2. Find the value of the corresponding p-value for this test statistic z. p-value = _____ (Round to three decimal places as needed.) 3. Do you reject or not reject the null hypothesis? 4. b. Choose the best interpretation of the results you obtained in part a.arrow_forward
- 00 T R AWM Z. Use the standard normal table to find the z-score that corresponds to the given percentile. If the area is not in the table, use the entry closest to the area. If the area is halfway between two entries, use the z-score halfway between the corresponding z-scores. If convenient, use technology to find the z-score. P72 Cliak to viouno The z-score that corresponds to P72 is (Round to two decimal places as needed.) Enter your answer in the answer box. ?. ll Jeffrey Jones 61 Lea V Stop Video Participants Chat Share Screen Record Reactions Unmute Type here to search 近。 PrtScn Home (口 F1 F2 F3 F4 F5 23 2$ 5. 9- 4. A. B.arrow_forwardT-TEST FOR INDEPENDENT MEANS 1. Two types of instruments for measuring the amount of sulfur monoxide in the atmosphere are being compared in an air pollution experiment. It is desired to determine whether the types of instruments yield measurement having the same variability. The following readings were recorded for the instrument. Sulfur Monoxide Instrument A Instrument B 0.86 0.87 0.82 0.74 0.75 0.63 0.61 0.55 0.89 0.76 0.64 0.70 0.81 0.69 0.68 0.57 0.65 0.53 Assuming the population of measurements to be approximately normally distributed, test the null hypothesis using two tailed test at 0.05 level of significance.arrow_forwardCalculate the correct t-statistics based on the information below. X1 = 200 X2 = 198 n1 = 17 n2 = 17 s1 = 2.45 s2 = 2.35 Let us assume that two groups of students at Tarleton are being compared on their average weights. Do you think the groups are different in terms of weight (measured in pounds)?arrow_forward
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman