An old study reported that 24% of Americans believe in space aliens. A re- searcher wants to determine if this number has changed. They sampled 200 Americans and found that 16% of them believe in space aliens. Test the claim using a one-proportion hypothesis test with a significance level of 0.02. DC

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A: Make Histogram

Q: of freedom. Com of freedom. Finc

A: Answer  By using the standard normal distribution:

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A:

Q: A storage box contains four 40W bulbs, five 60W bulbs, and six 75W bulbs. Suppose 3 bulbs are…

A: Number of 40W bulbs = 4  Number of 60W bulbs = 5  Number of 75W bulbs = 6  Total number of bulbs = 4…

Q: A news article that you read stated that 55% of voters prefer the Democratic candidate, You think…

A: sample size(n)=242 x=148 significance level(α)=0.05 sample proportion(p^)=xn=148242≅0.6116

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A: we were given as number career1 career2 career3 1 59 72 58 2 43 79 49 3 55 81 60 4 53 86…

Q: 8. Archaeology: Ireland Commercial dredging operations in ancient rivers occasionally uncover…

A:

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A: It has long been debated whether or not it is easier to raise boys or girls. Gallup has recently…

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A: For the given statement, we need answer true or false

Q: 78 76 112 96 89 89 102 66 77 93 111 94 68 64 99 87 70 93 62 89 82 115 97 98 107 114 100 94 75 89 100…

A: 78,76,89,89,77,93,111,94,108,110,77,94,96, 112,96,102,66,68,64,99,115,87,63,99,99,92,…

Q: The coefficient of determination of a set of data points is 0.862 and the slope of the regression…

A: From the given information,    The coefficient of determination, r2= 0.862 Slope of the regression…

Q: Let {X(t); t ≥ 0} be a continuous time Markov chain with generator matrix G = -4 2 1 2 -1 3 2 0 -5

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A:

Q: Say you have a sample of size of n many independent observations X₁, X2,..., Xn from some unknown…

A: the variance of the sample mean is given by Var(X)=σ2n

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A: Given data of percentage loss of wetlands and we have draw a stem and leaf plot.

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A: GivenXYZ52124796913783461269339134673313395

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A: Nt follow a Poisson process with a rate parameter of 0.25.

Q: A state administered standardized reading is given to eighth grade students. The scores for all…

A: Mean(μ)=517 Standard deviation(σ)=63

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A: We have to match the correct sampling  The state collects data on the age of its registered voters…

Q: (a) State the null hypothesis Ho and the alternative hypothesis H₁. H :O H₁:0 (b) Determine the type…

A: Let μ be the population mean sodium level for healthy adults. Given that, Population mean (μ)=138…

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A: The information provided in the question are as follows :- Population mean (μ)=500 Population…

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A: It is given that  Sample mean = 73.4 Sample standard deviation = 5.2 Sample size = 47 Confidence…

Q: Say we have a population parameter μ, and the 95% confidence interval for it is (-3, 10). Do you…

A: 95% is (-3, 10).

Q: The mean life time of a electric bulb produced is 1200 hours. A new batch of sample 200 bulbs were…

A: From the provided information, Sample size (n) = 200 Population standard deviation (σ) = 120 Sample…

Q: If N=480 and p̂ (p-hat) =0.88, find the margin of error at a 95% confidence level.

A: From the provided information, Sample size (n) = 480 p̂ (p-hat) =0.88 Confidence level = 95%

Q: A research team conducted a study to examine the differences between male and female students in the…

A: A - The appropriate null hypothesis for the study problem could be:"There is no significant…

Q: Compute the p-value for the test (use R). Round to the nearest 3rd decimal place, 0.xxx. b. Make…

A: New design: Sample size n1=35 Sample mean x¯1=15 Sample standard deviation s1=7   Old design: Sample…

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A: (a) The values of the widgets that the 95% of the distribution lies is obtained below as follows:…

Q: In Born together-Reared apart: the Landmark Minnesota twin study (2012), Nancy Segal discusses the…

A: Twins No Siblings Silblings 1 482 425 2 619 566 3 567 633 4 414 442 5 439 443 6 397 449…

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A: Thus, the shaded graph (i.e. the one on the bottom left) is correct

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A: By " Bartleby guidelines" Solve first 3 sub part ,i am solving 5 sub part.

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A: Suppose p is the true population proportion of students who have cars on campus.

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 118…

A: Mean()=118standard deviation()=19Someone qualifies as having Stage 2 high blood pressure if their…

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

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Q: A psychologist investigated whether there is a difference, on average, in IQ scores for twins. She…

A: given  Sample size (n) = 30 Mean difference (x̄) = 2.1 Standard deviation (s) = 7.2

Q: Question 6 "Suppose that in the past, 37% of all adults favored capital punishment. Do we have a…

A: Here From given information Claim : proportion of adult favoring capital punishment is increased .…

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A: The Wilcoxon signed-rank test is a non-parametric statistical test used to analyze paired data or…

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Q: The mean of a discrete random variable x. Select one: O a. is none of these b. is correctly…

A: The mean of a discrete random variable is customarily denoted by μ.

Q: A newspaper published an article about a study in which researchers subjected laboratory gloves to…

A: We have given thatn1 = 282 n2 = 282 Significance level (α) = 0.10Now,p̂1 = 62%p̂2 = 14%  We have…

Q: Consider the population model E[yi|Xi, Zi] = g(xi) + ziß for some function g(.). (This is referred…

A: Given Fact: E [ yi | xi , zi ] =g ( xi ) + ziβyi~=yi - E [ yi | xi ]zi~=zi - E [ zi | xi ]