A survey claims that 9 out of 10 doctors (e, 90%) recommend brand Z for their patients who have children. To test this claim against the aternative that the actual proportion of doctors who recommend brand Z is less than 90%.a random sample of doctors was taken. Suppose the test statistic is 1.75 Can we conclude that H o should be rejected at the a)a 0.10, bya005, and ca-001 level? O a) yes b) yeso no a) no, b) no ) no a) yes; b) yes; ) yes O al no, b) no yes

Q: n₁ = 14, n₂ = 12, x₁ = 21, ₂22, s, 2.5, s₂ -2.8 OA Reject Ho if the standardized test statistic is…

A: We have given that  Sample mean (x̅1) = 21Sample mean (x̅2) = 22Sample size (n1) = 14Sample size…

Q: If I tested the glucose level of 200 patients, and had the following results:o with disease who…

A:

Q: Suppose a study reported that the average person watched 1.87 hours of television per day. A random…

A: Consider that μ is the population mean amount of television watched by the average person per day.

Q: A random sample of 9 technicians working in a shop repair 15, 11, 9, 12, 15, 12, 13, 16 and 13 small…

A:

Q: A recent study of 89 people showed they ate sandwiches (S) an average of 21.4 times and…

A: Solution-: Given:  μ0=27.4,n=89,x¯=21.4,s=4.3, We take α=0.05

Q: Solve the second one

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A: Note: As per our company guidelines, we are supposed to answer only first three sub-parts. Kindly…

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A: The claim is that the mean age at which American children first read now over four years. The…

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A:

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A: For the given data perform z test for two proportion

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A: Given information: Git is given that Dr. Hess has done work that suggests that emotional arousal…

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Q: A random sample of 25 students were asked to self-identify as "statistics-lovers" or…

A: Here  degree of freedom df=n1+n2-2  n1=16   n2=9   so  Df=16+9-2     =25-2      =23

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A: It is given that the sample is 55 and there are three treatments.

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A: 1. Population 1 Runners participated in Marathon = 10000 Among these participants, 500 were chosen…

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A: It is given that the Institute of Medicine sets the tolerable upper level of sodium intake for…

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A: The χ2 test is a non-parametric test.

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A: Test statistic formula: t=M1-M2n1-1s12+n2-1s22n1+n2-11n1+1n2 Now substitute the given values in the…

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A: The objective of the question is to determine if there is a significant difference in hypertension…

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A:

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Q: (c) Find the value of the test statistic. (Round to three or more decimal places.) 2.724 (d) Find…

A: It is given that the two-tailed test. The test statistic is z = 2.724.

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A:

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A: interest. Use a 0.05 level of significance to test this hypothesis Given, x=218 n=250 Hypothesis;…

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A: Given, The sample proportion is,

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.