A researcher is conducting a study to examine what factors influence older adult's Binge Drinking behaviors, with binge drinking being consuming 4 or more drinks at a time. They gathered data from 1,666 older adults in the US and asked them how many days they drank four or more drinks in the past 12 months. Now that the researcher knows the average for the whole sample and has a margin of error around it, they want to know if there is a difference in the number of binge drinking days between women and men. Conduct a two-sample hypothesis test, going through all 5 steps to answer the question. Women Men x̄ = .45 x̄ = 4.32 s = 2.07 s = 15.07 N = 733 N = 933 Step 1: Select the assumptions that apply Group of answer choices Random Sample of Independent Random Samples Normal Sampling Distribution Interval-ratio variable of _ Nominal variable of ___ Equal population variances Step 2: H0μ1=μ2 What is your research hypothesis? Group of answer choices: H1: ?1 > ?2; Women have a significantly greater average number of binge drinking days than men. H1: ?1 ≠ ?2; There is a significant difference between women and men in the average number of binge drinking days. H1: ?1= ?2; There is no significant difference between women and men in the average number of binge drinking days. H1: ?1 < ?2; Women have a significantly lower average number of binge drinking days than men. Step 3: What is the critical score? Step 4: What is your obtained score? **Round final answers to 2 decimals. Step 5:

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Question

A researcher is conducting a study to examine what factors influence older adult's Binge Drinking behaviors, with binge drinking being consuming 4 or more drinks at a time. They gathered data from 1,666 older adults in the US and asked them how many days they drank four or more drinks in the past 12 months. Now that the researcher knows the average for the whole sample and has a margin of error around it, they want to know if there is a difference in the number of binge drinking days between women and men.

Conduct a two-sample hypothesis test, going through all 5 steps to answer the question.

Women	Men
x̄ = .45	x̄ = 4.32
s = 2.07	s = 15.07
N = 733	N = 933

Step 1:

Select the assumptions that apply

Group of answer choices

Random Sample of __

Independent Random Samples

Normal Sampling Distribution

Interval-ratio variable of ___

Nominal variable of ___

Equal population variances

Step 2:

H0μ1=μ2

What is your research hypothesis?

Group of answer choices:

H1: ?1 > ?2; Women have a significantly greater average number of binge drinking days than men.

H1: ?1 ≠ ?2; There is a significant difference between women and men in the average number of binge drinking days.

H1: ?1= ?2; There is no significant difference between women and men in the average number of binge drinking days.

H1: ?1 < ?2; Women have a significantly lower average number of binge drinking days than men.

Step 3:

What is the critical score?

Step 4:

What is your obtained score?

**Round final answers to 2 decimals.

Step 5:

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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