A market researcher claims that the purchases for a particular gift item are men, 50 percent; women, 40 percent; and children under 18, 10 percent. The researcher takes a sample in a very large department store and finds in a given week that 43 items were purchased by men, 33 by women, and 4 by children under 18. Does the evidence support the claim of the market researcher? Use alpha = 0.05

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A: The provided information are:

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A: Given information p0 = 0.33 n = 107 n p0(1 - p0) = 107 x 0.33 x (1 – 0.33) = 23.7(Rounded upto 1…

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Q: 1. For each of the following, which type of t-test is required? Independent samples or Related…

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A: Group 1 Group 2 Group 3 Total seldom or never 326 220 522 1068 often 511 269 721 1501 Total…

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A:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

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Q: The manufacturer of a popular soft drink claims that cans of this drink contain 12 ounces.  A…

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A: ]hypothesis  H0 : Mbefore =MafterH1 : Mbefore ≠ Mafter   before after  diff abs diff rank  7 5…

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A: Given that x̄1 = 5.9 s1 = 1.6 n1 = 40 x̄2 = 7.1 s2 = 1.8 n2 = 36…

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A:

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A: Givenn=106x=48p^=xn=48106=0.4528α=0.01

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Q: Based on information from a previous study, r1 = 38 people out of a random sample of n1 = 106 adult…

A:

Q: A random sample of 10 professional athletes produced the following data where X is the number of…

A: Solution: The data on X: the number of endorsements the player has and Y: the amount of money made…

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Q: 9. A study was conducted to determine if the proportion of cars in a given area that do not meet…

A: here given  H0 : P=0.08 H1 : P≠0.08 α=0.05

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Q: In a survey of 460   drivers from the​ South, 397   wear a seat belt. In a survey of 340…

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Q: Weinstein, McDermott, and Roediger (2010) report that students who were given questions to be…

A: State the hypotheses.

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Q: "A health psychologist wants to determine whether a new exercise effects the rate of heart attacks…

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A:

Q: The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a…

A: Introduction: Denote μ as the true average score in 2019.

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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.