Suppose a certain HIV test has both a sensitivity and specificity of 99.9%. This test is applied to a population of 1,000,000 people. Suppose the population comes from the blood donor pool that has already been screened. In this population, 0.1% of the population is actually infected with HIV.     Used drugs Did not use drugs Total Tested Positive       Tested Negative       Total           Complete the table above Calculate the PPV Calculate the NPV How many people will test positive who are, in fact, disease-free?

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A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…

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Q: A group of nutritionists is hoping to show that a new soybean compound has more protein per gram…

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Q: Pretend that you are conducting a study on academic adjustments of students in Claver National High…

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A: calculate the sample mean and sample standard deviation for given data set

Q: Experience has shown that 20% of all persons afflicted by a certain illness recover. A drug company…

A: Given,n=10p=0.2q=1-0.2=0.8A random variable X~Binomial (n=10 , p=0.2)

Q: How many tissues should a tissue pack contain? Researchers have determined that a person wears an…

A: Researchers have determined that a person wears an average of 54 tissues during a cold. Sample size…

Q: A manufacturer claims that 10% of women using the "pill" suffer from side effects. The Federal Drug…

A: It was found that 103 out of 900 women had side effects. Let p-cap be the sample proportion.

Q: A professor randomly selects a sample of 16 students to attend additional statistics tutoring…

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Q: You measured 0.0899 ± .0008 µg/mL, also with 7 samples [0.092, 0.089, 0.097, 0.808, 0.091, 0.082,…

A: Given information: The data represents the 8 measurements of level-1 and level-2. The data is as…

Q: A normal distribution has a mean of 60, and a standard deviation of 12. Compute the z-score for the…

A:

Q: The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a…

A: Given :  The corrosive effects of various soils on coated and uncoated steel pipe was tested by…

Q: Q2) Let X, X X. iid N(H,0), be a random sample from the normal population where u is assumed known.…

A:

Q: REM (rapid eye movement) sleep is sleep during which most dreams occur. Each night a person has both…

A: a) Denote μ1, μ2 as the population mean REM sleep time for children and adults, respectively. It is…

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A: The coefficient of variation (CV) is a statistical measure of the dispersion of data points in a…

Q: f sample variance is computed by dividing SS by df = n - 1, then the average value of the sample…

A: variance is one of the measures of dispersion .It is used to measure how far a set of values are…

Q: A random sample of n, = 10 regions in New England gave the following violent crime rates (per…

A:

Q: Researchers have determined that a person uses an average of 40 tissues during a cold. Suppose a…

A: Denote μ as the true average number of tissues required by the relevant population during a cold. It…

Q: he dietician is working with a random sample of 50 patients who are dieting. He puts them on a…

A: The dietician is working with a random sample of 50 patients who are dieting.

Q: Suppose you have a normally distributed population such that o² = 2. Using the sampling distribution…

A: From the given information, the sample size n is 15.

Q: The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a…

A: n = 44 Σd = 224 Σd2 = 6268  Where, d is the amount of corrosion on the coated portion subtracted…

Q: A medical college dean read that the average number of applications a potential medical school…

A: given  x=7.9σ=2.4n=26α=0.05 the test Hypothesis  H0:μ=7.6 H1:μ≠7.6

Q: A researcher would like to determine whether over-the-counter cold medication has an effect on the…

A: Given,

Q: A researcher would like to determine whether an over-the-counter cold medication has an effect on…

A:

Q: A new vaccination is being used in a laboratory experiment to investigate whether it is effective.…

A: Critical value: The degrees of freedom is (2 – 1) ∙ (2 – 1) = 1. It is known that level of…

Q: A sample of 25 is selected from a population with μ=40 and a treatment is administered to the…

A: The sample size is 25 and the population mean is μ=40 The sample mean and variance are M=43 and s2=9…

Q: A normal distribution has a mean of 60, and a standard deviation of 12. Compute the z-score for the…

A:

Q: Please answer all questions clearly please! Suppose the Total Sum of Squares (SST) for a completely…

A: Given that  n=15 , k=5 , α=0.05.

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A: Given Data: n=16 x¯=56σ=8   Null and Alternate Hypothesis H0: μ=60HA: μ≠60

Q: 4. The t statistic, the t distribution, and sample size The average age at which adolescent girls…

A: Given:

Q: Studies show that the level of anxiety has increased since the pandemic. The average score before…

A: We have to find no. Of tails.

Q: Researchers determine that 60 puffs tissues are the average number of tissues used during a cold.…

A: Given that, μ=60n=100x¯=52s=22

Q: 11) A national health survey weighed a sample of 531 boys aged 6-11 and found that 86 of them were…

A: a). Null and alternate hypotheses: The investigator is specifically interested to test whether the…

Q: Let x be a random variable that represents micrograms of lead per liter of water(ug/l).An industrial…

A: Given Information:

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A: Given: The Area of the plot = m2 Independent measurements = n Mean = m Variance = s2

Q: (a) 95 percent confident that , the sample mean hourly yield, is within a margin of error of 8…

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Q: 4. The table given below shows the data obtained during outbreak of smallpox: Attacked 31 Not…

A:

Q: The following table shows the weights (in pounds) and the number of hours slept in a day by a random…

A: Given data: x 8.1 10.2 9.9 7.2 6.9 11.1 11.1 15.1 y 14.9 14.6 14.1 14.2 13.7 13.2 13.9 12.5…

Q: A new vaccination is being used in a laboratory experiment to investigate whether it is effective.…

A: It is given that the level of significance is 0.005.

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Q: (a) A new car model has a design fault, as a result of which 10% of production cars have a…

A: Let X denotes the number of cars having the ignition problem. Let p denotes the probability that a…

Q: The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a…

A:

Q: Doctors developed an intensive intervention program for obese patients with heart disease. Subjects…

A: Obtain the 95% confidence interval for the mean of the differences.   The 95% confidence interval…

Q: ACT composite scores are normally distributed with au= students is randomly selected from a local…

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Q: 14 of 1 100 A researcher uses a random sample of 200 peopie in prison in the United States to find…

A: The provided information is: Sample sizen=200 Sample proportionp^=0.485

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.