n a simple randon sample size of 89, there were 40 individuals in the category of interest. It is desired to test -- Ho: P=0.46 vs H1: P<46. Compute the statistic Z

Q: 5. A sample of n 36 from a population of u = 50 and o = 18 has a mean M = 47 the z-score for the…

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Q: what would the mean and standard deviation of the sample proportion ˆp be?

A: Let X be Pennsylvanians who have a high school diploma Given, n = 225 p = 0.83

Q: Choose the most appropriate statistical analysis for an experiment where 2 different groups of…

A: Statistical Test A statistical test is a method that allows us to make empirical conclusions about a…

Q: A study was done using a treatment group and a placebo group. The results are shown in the table.…

A: Denote μ1, μ2 as the population mean for treatment and placebo groups, respectively.

Q: A coin was flipped 80 times and came up heads 45 times. At the .10 of significance, is the coin…

A: n = 80, x = 45, .10 of significance

Q: Each person in random samples of 237 male and 293 female working adults living in a certain town in…

A: Given: For male: n1 = 237 X1  = 31.6 s1 = 24 For female: n1 = 293 X2  = 29.3 s2 = 24.3 Formula Used:…

Q: Use the pulse rates in beats per minute​ (bpm) of a random sample of adult females listed in the…

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Q: Use the pulse rates in beats per minute​ (bpm) of a random sample of adult females listed in the…

A: The random variable pulse rate follows normal distribution. We have to test whether the mean pulse…

Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of…

A: The given linear regression equation is, Here, slope = 0.96 Intercept = 4.86

Q: Do cars get better gas mileage on the highway? The table shows the mileage per gallon of cars on…

A: Given that, Sample size n=8 The difference between two paired samples is calculated using formula…

Q: b. The test statistic 2.234 (please show your answer to 3 decimal places.)

A: State the hypotheses.   (b)   Obtain the value of the test statistic . The value of the test…

Q: Thirty GPAs from a randomly selected sample of statistics students at a college are linked below.…

A: The technician in charge of records claimed that the population mean GPA for the whole college is…

Q: A study was done on proctored and nonproctored tests. The results are shown in the table. Assume…

A: Given that We have to test hypothesis for the claim that claim that students taking nonproctored…

Q: In a random sample of males, it was found that 29 write with their left hands and 225 do not. In a…

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Q: eople are randomly selected and the accuracy of their wristwatches is checked, with positive errors…

A: Given  Population mean μ=0, sample mean x̄=102, n=sample size=50 , population standard deviations…

Q: An ANOVA is used to evaluate the mean difference among three treatment conditions with a sample of…

A: Given Anova is used to evaluate mean difference among three treatments.So number of treatments = k =…

Q: A one-way ANOVA test is conducted and finds the following results:  MSTr = 30.214, and MSE = 16.581.…

A: GivenA one-way ANOVA test is conductedMSTR=30.214MSE=16.581

Q: A test is made of Ho: μ = 100 vs. Ha : μ ≠ 100. Given a sample size of 100 and its mean of 97 and…

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Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A: There are two dependent samples which are Spouse 1 and Spouse 2.We have to test whether there is a…

Q: You wish to test the following daim (Ha) at a significance level of a = 0.10. H.:P1 = P2 Ha:P1 + P2…

A: Given data: Significance level = 0.10

Q: Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs of…

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Q: 52% of students entering four-year colleges receive a degree within six years. Is this percent…

A: Solution: Given information: n= 231 Sample size  x= 129 success  p^=xn= 129231=0.5584   Sample…

Q: If the obtained sample mean has a z score of 1.69 and if a = .05, should you reject or fail to…

A: The given z-score is 1.69 and the alpha is 0.05.

Q: For the ANOVA result, F(4, 153) = 1.102, p = 0.358 how do I answer the folowing?1. How many groups…

A: Given that, F (4, 153) = 1.102, p = 0.358 F (k-1, N-k)

Q: Do cars get better gas mileage on the highway? The table shows the mileage per gallon of cars on…

A: Given, the mileage per gallon of cars on city streets and the mileage per gallon of cars on the…

Q: Suppose you want to test the claim that u, =2. Two samples are randomly selected from normal…

A: From the provided information,

Q: Pulse Rate (bpm) 101 66 78 103 80 58 86 93 80 64 44 45 96 77 93 62 88 67 73 81 103 90 62 88 66 105…

A: The random variable X follows normal distribution. A sample of 46 observations is given. We have to…

Q: (a) What is the level of significance? State the null and alternate hypotheses. O Ho: Hy = Hzi…

A: For fishing, sample size n1 = 41, sample mean = 4.9 and population SD = 1.6 For camping, sample size…

Q: 50 people are randomly selected and the accuracy of their wristwatches is checked, with positive…

A: Given data is, n=50  x¯=93 secσ =223 secα=0.02 Claim:- The population mean of all watches is 0 sec.…

Q: A random sample of 10 independent healthy people showed the body temperatures given below (in…

A: The objective of this question is to test the hypothesis that the population mean is not 98.6 °F…

Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…

A: Obtain the predicted value of y given that the twin born first has an IQ of 99.   The predicted…

Q: The lengths of adult males' hands are normally distributed with mean 187 mm and standard deviation…

A: Given that, Mean=187      Standard deviation=7 Here in the option they mentioned that group =18.

Q: The lengths of adult males' hands are normally distributed with mean 192 mm and standard deviation…

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Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A: Let, x denotes the spouse 1 and y denotes the spouse 2. The data is given as- x y 122 120 104…

Q: A researcher was interested in comparing the amount of time (in hours) spent working out by women…

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