Physicians at a clinic gave what they thought were drugs to 950 asthma, ulcer, and herpes patients. Although the doctors later learned that the drugs were really placebos, 56% of the patients reported an improved condition. Assume that if the placebo is ineffective, the probability of a patients condition improving is 0.51 For the hypotheses that the proportion of improving is 0.5 against that it is >0.51, find the p-value. p=

Q: A sociologist recently conducted a survey of citizens over 60 years of age who have net worthies too…

A: 64,83,66,92,78,73,62,92,73,85,72,61,81,73,88,81,84,86,84,83

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A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

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A: Consider two samples that were taken randomly Assume the two samples follows normal distribution…

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A:

Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.

A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.

Q: Suppose that 35%  of all adults in a population would say “good”  and 65% would say “bad”  if they…

A: As per the question35% population say good65% population say badMean of the ample proportion who say…

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A: a) Define that p is the proportion of all adult Americans who would prefer to live in a hot climate…

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A: Type I error (α):Type I error is defined as the probability of rejecting the null hypothesis when it…

Q: you decrease the level from .05 to 0.1 then you increase the likelihood of a type l error. True or…

A: In hypothesis testing, the Type I error is known as the probability of rejecting the null hypothesis…

Q: A repeated-measures, a matched-subjects, and an independent-measures study all produce a t statistic…

A: From the provided information, A repeated-measures, a matched-subjects, and an independent-measures…

Q: 2. The average amount of money spent on monthly household items is x = $1,087 with 6-1 = $254.18…

A: The provided information is as follows:The average amount of money spent on monthly household items…

Q: B. Edna ranked 75th in her senior class of 400 students. Rey is in the same senior class and has a…

A: We have to find whose rank is better in two problems B and C.

Q: by pany robability that the proportion of defective television

A: Given: EX=0.25VX=0.0375 P(0.2 < X < 0.5)

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A: Determine the critical value   Follow the instruction to obtain the chi square critical value:…

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A: A normal dist. is symmetric and has a bell-shaped curve.

Q: A carnival game is designed so that approximately 10% of players will win a large prize. If there is…

A: Solution: Given n= 100 Sample size  p= 0.10 Population proportion.  The condition or assumption for…

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A: The given data is as follows:The range of the data is 13 minutes.The minimum time duration of…

Q: According to previous studies, 10% of the U.S. population is left-handed. Not knowing this, a high…

A: The following solution is provided below

Q: Suppose that 35% of all adults in a population would say “good” and 65% would say “bad” if they were…

A: It is given that a sample of 1,000 adults from a population is randomly selected and the population…

Q: A study of breast cancer in postmenopausal women included 500 cases of invasive breast cancer and…

A: Odds Ratio:   The measure of association between the exposure and an outcome in a population is…

Q: A population of N = 6 scores has ΣX = 42. What is the population mean?

A: Given ,Population of N=6 scoresand Σx =42

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A: We have given that,  The 75th percentile is a value such that at least 75 percent of the…

Q: In a normal distribution of test scores, a score of X = 70 has a percentile rank of 54%. This means…

A: The pth percentile of a set of observations is the value below which, p% or (p/100) proportion of…

Q: Statistics Canada wants to know the unemployment rate in Vancouver during any part of last year. How…

A: confidence level=90% Margin of error(E)=0.012

Q: In the US, 60% of all people have type O blood, 20% have type A blood, 15% have type B blood and 5%…

A: We are rejecting Ho, As P-value < 0.01

Q: A sociologist recently conducted a survey of citizens over 60 years of age who have net worthies too…

A: 64,83,66,90,66,92,78,73,62,92,73,85,72,61,81,73,88,81,84,86,84,83

Q: For a normally distributed random variable, the stnadard deviation is 3.7. What us the mean if 10%…

A: Given : Population Standard Deviation,σ = 3.7 test score,x = 31

Q: n the US, 60% of all people have type O blood, 20% have type A blood, 15% have type B blood and 5%…

A: State the hypotheses.   The original claim is, Obtain the degrees of freedom. The degree of…

Q: researcher believes that 52.5% of people who grew up as the only child have an IQ score over 100.…

A: Given: Population proportion of people with IQ score over 100 is 50%; P=0.5 Sample size n=400

Q: Suppose that you want to perform a hypothesis test based on independent random samples to compare…

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Q: A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of…

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Q: A geologist is making guesses about the mean length of fossil teeth of a certain species found in a…

A: From the provided information,

Q: An ANOVA is used to compare the mean GPA of the following groups of students.

A: Rejection Rule:   If the absolute mean difference is greater than HSD(=0.8), then the pairs of…

Q: According to a report on consumer fraud and identity theft, 20% of all complaints for a year were…

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Q: Suppose that the number of points scored in a game comes from a normal population with an average of…

A: Here points scored follows Normal distribution with mean 12 and SD 9. Here we need to use the…

Q: An asset has 0.5% chance of attack and 20% chance of the attack being successful if it happens. The…

A:

Q: A researcher selects a sample of 6 men and 11 women. She asks participants to rate the likelihood…

A: Given that  For Men  n1 = 6 , Mean = M1 = 2.1 For Women  n2 = 11 , Mean = M2 = 4.3