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lutney sagesse

lutney s.

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A card is selected at random from a standard deck of 52 playing cards. Find each probability. (a) Randomly selecting a club or a 3 (b) Randomly selecting a red suit or a king (c) Randomly selecting a 9 or a face card

A card is selected at random from a standard deck of 52 playing cards. Find each probability. (a) Randomly selecting a club or a 3 (b) Randomly selecting a red suit or a king (c) Randomly selecting a 9 or a face card

Elementary Statistics: Picturing the World

Probability

The Addition Rule

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Jenny Wu verified

Numerade educator

The climate and geography of Italy has led to more tomato- and cream-based dishes in the northern region. tomato-based dishes in the northern region. cream-based dishes in the southern region. cream- and cheese-based dishes in the northern region. cheese-filled pasta dishes in the southern region.

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Jenny Wu verified

Numerade educator

When analyzing continuous data, when should a non-parameter test be tested? A. When the p-value is unknown B. When the assumptions of a parametric test are not met C. Whenever it is more convenient D. When the hypothesis is unknown

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Ivan Kochetkov verified

Numerade educator

If the probability of being left -handed is 0.11, and the probability of being ambidextrous (being neither right-handed nor left -handed) is 0.09. what is the probability of being right- handed? (Categories are mutually exclusive). A. Pr (bieng right-handed) = 0.20 B. Pr (being right-handed )= 0.80 C. Pr (being right-handed ) = 0.99 D. Pr (being right-handed ) = 0.89

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Ivan Kochetkov verified

Numerade educator

What are the most appropriate measures of central tendency and dispersion for the distribution of a continuous variable that contains outliers? A. Mean and standard deviation or variance B. Mean and range C. Median and interquartile range D. Median and standard deviation

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Robin Corrigan verified

Numerade educator

How would a confidence interval for a point estimate change if the sample size is substantially increased? A. The confidence interval would become wider B. The confidence interval would be unchanged C. The 99% confidence interval would be calculated D. The confidence interval would become more narrow

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James Kiss verified

Numerade educator

You are asked to test odds of throat cancer for smokers compared to non-smokers. You run a logistic regression and get an odds ratio of 1.23. Which of the following is a correct interpretation of this finding? A. There are .23 greater odds for each unit increase in smoking B. There is 23% greater odds of throat cancer in smokers compared to non-smokers C. There is a 23% lower odds of throat cancer in smokers compared to non-smokers D. There is a 23% lower odds of smoking in those without throat cancer compared to those who have throat cancer

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Nick Johnson verified

Numerade educator

What is the appropriate interpretation for a coefficient of variation (R2) of 0.3?

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Sheryl Ezze verified

Numerade educator

An outbreak of Legionnaireā€™s disease occurs among patients at a VA hospital. A study is run to assess the odds of acquiring Legionnaireā€™s Disease based on whether the patients was in a ward that used untreated drinking water or not. Data table Calculate the chi-square test of independence, and associated p-value Chi-square = 2.52, p = 0.11 Chi-square = 1.61, p = 0.47 Chi-square = 5.98, p = 0.01 Chi-square = 0.98, p = 2.6

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Breanna Ollech verified

Numerade educator

In a study of people enrolled into 4 diet groups, Group 4 is invalidated based on a faulty assumption of their diet. What was the F value and p-value of the ANOVA test among the remaining 3 groups? Data table F = 8.3, p = 0.35 F = 1.8, p = 0.06 F = 3.35, p = 0.06 F = 3.8, p = 0.035

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Breanna Ollech verified

Numerade educator

Percent oxygen in white blood cells was measured in groups of infants from 3 different maternity wards. What was the F value and p-value of the ANOVA test? Data table F = 4.15, p = 0.04 F = 1.2, p = 0.04 F = 3.2, p = 0.04 F = 3.35, p = 0.04

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