Researchers wanted to proof that men who ate fried chicken for more than 6 years straight...

Researchers wanted to proof that men who ate fried chicken for more than 6 years straight doubled the risk of getting high cholesterol, so they started a cohort study. In 2006, 1,000 men were enrolled in the study and they did not have cholesterol. In 2017, 70% were free of high cholesterol. 1.5% of the cholesterol free men ate fried chicken for about 6 years. The 200 men that ate it for over 6 years developed high cholesterol years after the study started. What is the best measure of association? Show it in a 2x2 contingency table Calculate the measure of association

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One day 23 years ago, at age 42, Hakim ate a lunch of extra greasy fried...

One day 23 years ago, at age 42, Hakim ate a lunch of extra greasy fried fish and chips. Two hours later, he was doubled over with the worst pain he had ever felt in the pit of his stomach. At first, he thought he was having a heart attack, but the pain came and went in several waves every few minutes, and radiated toward his right side. So then he thought maybe it was an ulcer. Amid the third...

Researchers wanted to determine if carpeted rooms contained more bacteria than uncarpeted rooms. To determine the...

Researchers wanted to determine if carpeted rooms contained more bacteria than uncarpeted rooms. To determine the amount of bacteria in a room, researchers pumped the air from the room over a Petri dish at the rate of 1 cubic foot per minute for eight carpeted rooms and eight uncarpeted rooms. Colonies of bacteria were allowed to form in the 16 Petri dishes. The results are given in the table below. Assume the distribution to be approximately normal. Do carpeted rooms...

People gain weight when they take in more energy from food than they expend. Researchers wanted...

People gain weight when they take in more energy from food than they expend. Researchers wanted to investigate the link between obesity and energy spent on daily activity. Choose 20 healthy volunteers who don't exercise. Deliberately choose 10 who are lean and 10 who are mildly obese but still healthy. Attach sensors that monitor the subjects' every move for 10 days. The table below presents data on the time (in minutes per day) that the subjects spent standing or walking,...

Researchers claim that women speak significantly more words per day than men. One estimate is that...

Researchers claim that women speak significantly more words per day than men. One estimate is that a woman uses about 20,000 words per day while a man uses about 7,000 . To investigate such claims, one study used a special device to record the conversations of male and female university students over a four‑day period. From these recordings, the daily word count of the 2020 men in the study was determined. The table contains their daily word counts. 28,408 10,084...

An investor has researched financial information for Fried Chicken Corporation over the past three years. He...

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Men generally report wanting to have sex more than women. How might the discord between wanted...

Men generally report wanting to have sex more than women. How might the discord between wanted frequency of sex lead to problems in the relationship? Is it ever good to have discord over frequency?

20.37) Researchers claim that women speak significantly more words per day than men. One estimate is...

20.37) Researchers claim that women speak significantly more words per day than men. One estimate is that a woman uses about 20,000 words per day while a man uses about 7,000. To investigate such claims, one study used a special device to record the conversations of male and female university students over a four- day period. From these recordings, the daily word count of the 20 men in the study was determined. Here are their daily word counts: 28418 10083...

(20.37) Researchers claim that women speak significantly more words per day than men. One estimate is...

(20.37) Researchers claim that women speak significantly more words per day than men. One estimate is that a woman uses about 20,000 words per day while a man uses about 7,000. To investigate such claims, one study used a special device to record the conversations of male and female university students over a four- day period. From these recordings, the daily word count of the 20 men in the study was determined. Here are their daily word counts: 28403 10087...

Jenny wanted to know if people who exercise regularly eat more apples than people who don’t...

Jenny wanted to know if people who exercise regularly eat more apples than people who don’t exercise regularly. She took a simple random sample of six people who exercise. Their standard deviation was 2.00. She then took a new simple random sample of eight people who don’t exercise. Their standard deviation was 1.51. Please calculate the test statistic for this experiment; then state the critical value; then come to a conclusion concerning the null hypothesis; and then state what the...

QUESTION 1: Researchers claim that women speak significantly more words per day than men. One estimate...

QUESTION 1: Researchers claim that women speak significantly more words per day than men. One estimate is that a woman uses about 20,000 words per day while a man uses about 7,000. To investigate such claims, one study used a special device to record the conversations of male and female university students over a four- day period. From these recordings, the daily word count of the 20 men in the study was determined. Here are their daily word counts: 28416...

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