A psychologist is studying smokers' self-images, which she measures by the self-image (SI) score from a...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A psychologist is studying smokers' self-images, which she measures by the self-image (SI) score from a personality inventory. For adults in the U.S., the mean SI score from this inventory is about 140. The psychologist gathers a random sample of 21 SI scores of smokers and finds that their mean is 154 and their standard deviation is 40. Assume that the population of SI scores of smokers is normally distributed with mean u. Based on the sample, can the psychologist conclude that u is different from 140? Use the 0.05 level of significance. Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: 耳。:0 The alternative hypothesis: H, :0 ローロ ロsD (Choose one). DRO The type of test statistic: 口ーロ ロ<ロ The value of the test statistic: (Round to at least three decimal places.) The two critical values at the 0.05 level of significance: I and (Round to at least three At the 0.05 level of significance, can the psychologist conclude that the mean SI score Yes No among smokers is different from 140? A psychologist is studying smokers' self-images, which she measures by the self-image (SI) score from a personality inventory. For adults in the U.S., the mean SI score from this inventory is about 140. The psychologist gathers a random sample of 21 SI scores of smokers and finds that their mean is 154 and their standard deviation is 40. Assume that the population of SI scores of smokers is normally distributed with mean u. Based on the sample, can the psychologist conclude that u is different from 140? Use the 0.05 level of significance. Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: 耳。:0 The alternative hypothesis: H, :0 ローロ ロsD (Choose one). DRO The type of test statistic: 口ーロ ロ<ロ The value of the test statistic: (Round to at least three decimal places.) The two critical values at the 0.05 level of significance: I and (Round to at least three At the 0.05 level of significance, can the psychologist conclude that the mean SI score Yes No among smokers is different from 140?
Expert Answer:
Related Book For
Fundamental Statistics for the Behavioral Sciences
ISBN: 978-1285076911
8th Edition
Authors: David C. Howell
Posted Date:
Students also viewed these mathematics questions
-
Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a The null hypothesis: H : The alternative hypothesis:...
-
Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas. The null hypothesis: The alternative...
-
A simple random sample of 21 peanut M&M candies is selected, and each candy is weighed. The mean is 2.4658 g and the standard deviation is 0.3127 g. The 100 g MScM plain candies listed in Data Set 11...
-
Suppose a state was trying to decide whether to fund primary and secondary education with a property tax or an income tax. What implications might this choice have for land use in the state?
-
Which entrepreneurial competencies to you possess? Be ready to provide examples and explain why you made this choice. You can use the result of Skill Module 2.2 to aid you in this.
-
The 1964 Pontiac GTO was one of the first so-called muscle cars produced in the United States in the 1960s and 1970s. The 389-in 3 displacement V-8 engine in the GTO delivered a maximum of 348 hp and...
-
The following balance sheets were drawn up immediately after Pai Ltd had acquired control of Filho Ltd. You are to draw up a consolidated balance sheet. Pai Balance Sheet Investment in Filh Ltd:...
-
The comparative financial statements of Chattah Inc. are as follows. The market price of Chattah Inc. common stock was $25 on December 31, 2012. Instructions Determine the following measures for...
-
. 22 ) which account would be considered for financing and tax considerations ? A Cost of goods sold R Depreciation and amortization ( ) Gross profits D/ Earnings before takes 23 ) What type of...
-
Using Exhibit 1.3 as a model, describe the source- make- deliver-return relationships in the following systems: From Exhibit 1.3 a. An airline b. An automobile manufacturer c. A hospital d. An...
-
Identify at least two analytical tools that Victors & Spoils could use to inform their decision making about whether to remain independent or partner with another company. Explain why each tool would...
-
You borrowed $15,000 today for 48 months at 12% per year to purchase a car. Calculate the monthly payment at the end of each month.
-
write me an essay in pages CASH vs CREDIT CARD ( comparison and Contrast essay )
-
1. List AND explain 3 concepts one must learn about Plain View, Open fields, abandonment, and border searches. 2. List AND explain 3 concepts one must learn about Lineups and other means of Pretrial...
-
A) = Find the output of the following programs: int[] list (0, 1, 2, 3, 4}; int y = 10; for (int i=0; i < 3; i++) { list[list.length/2+1] = ++y; y += 2; } for (int x: list) System.out.println(x); B)...
-
1.Describe weighted average cost of capital (WACC) and why it is used in capital budgeting. 2. Describe the capital components used to determine the WACC for a firm.
-
True or False? The development of electrocardiography allowed scholars to examine the kinematics and kinetics of movement, and led to the use of engineering principles in biomechanical analysis
-
By referring to Figure 13.18, determine the mass of each of the following salts required to form a saturated solution in 250 g of water at 30 oC: (a) KClO3, (b) Pb(NO3)2, (c) Ce2(SO4)3.
-
Use protected t tests for the data in Exercise 16.7 to clarify the meaning of the significant F. In Exercise 16.7 Group Mean S.D. SIT PE SC WL 11.07 15.40 8.09 9.50 3.95 11.12 7.13 7.11 14 I0 10
-
The chair of a psychology department suspects that some of his faculty are more popular than others. There are three sections of Introductory Psychology (taught at 10:00 am, 11:00 am, and noon) by...
-
Why cant we use random assignment in the study of homophobia, and what effect will that have on the conclusions we are allowed to draw?
-
Petronet sells merchandise to its 80-percnet subsidiary Sonata at a markup of 20 percent on cost. During 2017, Petronet charges Sonata \($4,000,000\) for merchandise sales. Sonatas 2017 beginning...
-
Pentamedia owns 90 percent of Sesa. At the start of 2016, Sesa sold buildings carried at \($4,000,000\), net, to Pentamedia for \($6,000,000\). The buildings had a remaining life of 10 years and...
-
A parent sells land costing \($35,000\) to a subsidiary in 2016 for \($55,000\). The subsidiary sells the land in 2018 to a third party for \($85,000\). On the consolidated income statement for 2018,...
Study smarter with the SolutionInn App