A random survey of 90 women who were victims of violence found that 24 were attacked by relatives. A random survey of 60 men found that 10 were attacked by relatives. At a=0.05. can it be shown that the percentage of women who were attacked by relatives is different from the percentage of men who were attacked by relatives?  Compute the test value. Round sample proportions to three decimal places and z score values to two decimal places.  Find the critical values.  Do we reject or not reject the null hypothesis?

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Q: Using the table of the areas under the normal curve, find the z scores if the area is 0.2764.

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Q: Estimate the chance that the sample proportion was more than 45% using a normal approximation.

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A: Given Information 99% confidence interval (-3.172, 4.714)

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A: mean = 24.5 n = 28 sample mean = 25.3

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A:

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Q: Find the Z-score that describes the following proportions under the normal curve (within 0.01…

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Q: f the F ratio in an ANOVA is more extreme than the cutoff score, what does this suggest?

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A: H0= mu1- mu2=0 Ha= mu1-mu2 >0 One tailed z test

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A: Given: Grouped Frequency distribution: Class interval frequency 1-10 8 11-20 18 21-30 30…

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Q: Consider random samples of size 1000 from a population with proportion 0.60. Find the standard error…

A: For proportion p the standard error is defined as σp = √[p(1 – p)/n].

Q: A sample size of _is needed.?

A: Here use formula of margin of error

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Q: A z-score less than O represent an element above than the mean.

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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.