A doctor is interested in determining whether a film about exercise will change 10 persons’ attitudes toward exercise. The results of this questionnaire are shown where SD (before) = 3.17 and SD (after) = 2.63). A higher numerical value shows a more favorable attitude toward exercise. Is there enough evidence to support the claim, at αα = 0.05, that there was a change in attitude? What is the absolute computed t-value?

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A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

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A: We have given that,  Favorable cases (X) = 48 and sample size (n) =185 Then,  We will find sample…

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A: In this case, the researcher is interested to know either the hamsters will run less during the…

Q: Dr. Mary Hugh reported the following in an article pertaining to obesity levels “F (2,50) = 1.113, p…

A: Dr. Mary Hugh reported the following in an article pertaining to obesity levels “F (2,50) = 1.113, p…

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A: Let Y denotes the matabolic rate of the child. And X denotes the body weight of a child.

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Q: In Dr. Potter’s study of ‘Objective Increases in Fear Based on Type of Haunting’, he reported that…

A: a. It is given that, ghosts earned a z-score of 0.93, spirits earned a z-score of -0.75, and…

Q: If you are only comparing two groups of respondents, and the t-value is found to be 2.30, what will…

A: If you are only comparing two groups of respondents, and the t-value is found to be 2.30, what will…

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Q: A researcher is interested in hamster wheel-running activity during the summer versus the winter. He…

A: The average difference score is MD = 3.8, the sum of squares is SS = 522.15 and the sample size is n…

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Q: Health care workers who use latex gloves with glove powder on a daily basis are particularly…

A: From given data we have : sample size n = 45 sample meanx¯=19.5 sample standard deviation s=12.1

Q: Ophthalmology  Retinitis pigmentosa (RP) is a hereditary ocular disease  in which patches of pigment…

A: The Longitudinal visual field data for one RP patient is given below.VisitTime(in year)visual field…

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Q: Suppose a professional basketball player historically makes 39% of his three-point field goals.…

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Q: A     marketing     manager     conducted     a     study     to     determine     the…

A: Given Information: Intercept = 104.062 Slope = 50.730 R-squared value is 0.8340

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A: From the given information,   Close Friends(X) Self-Esteem(Y) Mean 8.90 5.20 SD 3.75 2.15…

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A: The regression is y-hat = a+bx = 33.15+5.525x

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Q: The following Minitab display gives information regarding the relationship between the body weight…

A: From the given output, the slope (b) is 0.38837 and the intercept (a) is 0.8327.

Q: (b) Give a point estimate of o. (Round your answer to five decimal places.) Interpret this estimate.…

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A: An economist performed a study of the possible association between weekly income and weekly grocery…

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A: Given data, X Y X*Y X*X 2 91 182 4 6 46 276 36 7 32 224 49 9 6 54 81 12 4 48 144

Q: researcher was interested in the relationship between number of close friends and self-esteem. A…

A: Here, the independent variable, x is number of close friends and the dependent variable, y is…

Q: An economist conducted a study of the possible association between weekly income and weekly grocery…

A: Answer: From the given data, An economist conducted a study of the possible association between…

Q: D E AND F

A: Given : Two new drugs are being compared for effectiveness in lowering total cholesterol levels. On…

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Q: A psychologist decided to study whether rocking babies in a mechanical baby rocker would affect…

A: Given info: Σ D = -34.2  Σ D2 = 197.82 D-bar = -4.275

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A: To testH0:μd=0H1:μd>0where μd=μ1-μ2, μ1 and μ2 are the population means

Q: 138 patients who received 10-mg doses of a drug daily, 33 reported headache as a side effect. Obtain…

A: We have given that Sample size n =138 Favorable cases x =33

Q: A study examines self-esteem and depression in children. A sample of 25 children with low…

A: Let,     μ denote the population mean     n denote the sample size     x¯ denote the sample mean…

Q: researcher was interested in the relationship between number of close friends and self-esteem. A…

A: Since there are multiple questions, part a, b, c is answered. kindly repost for more help.

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A: When a treatment is applied to a group and results are obtained after the treatment, the method is…

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A: a) Percentage of the observed variation in depression score is R^2=27.16% b) Point Estimate of sigma…

Q: datasets, shown in Figures 3 and 4 below. 2 1- 270 275 280 285 290 295 300 305 310 315 Figure 3

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Q: A psychologist is studying the effects of lack of sleep on the performance of various…

A: We have to find out answer of given question....

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A: Given observation and calculation is shown below Age of child(x) Time doing(y) x2 y2 xy 11 5…

Q: e) f) g) Conclusion Use a computer application to solve for the following problems. / Test…

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Q: For healthy adults, the mean pH level is µ = 7.4, a new drug for arthritis has been developed.…

A: The test statistic is, z=x¯-μσn=8.0-7.42.333=0.60.40037860≈1.50 The test statistic is 1.50.

Q: A study of the relationship between age and various visual functions (such as acuity and depth…

A: Solution-: From the given data we want to calculate (a) ∑xi=?      ∑xi2=? (b) sample variance s2=?…