A study of 4299 adults from country A found that 2248 were obese or overweight. The point estimate for p, p. is (Round to three decimal places as needed.)

Q: Find the z-score that cuts off 70% in the body on the right.

A:

Q: According to the Distribution of Z table, ______ % of area is below a Z value of -0.50?

A: Using a standard normal table area to the left of z score, look up for z value -0.50 i.e., -0.5 in…

Q: The scores of 40,000 county employees who took a recent civil service exam were normally distributed…

A: It is given that the scores follow normal distribution with mean 70 and standard deviation 10.…

Q: Dr. Mary Hugh reported the following in an article pertaining to obesity levels “F (2,50) = 1.113, p…

A: Dr. Mary Hugh reported the following in an article pertaining to obesity levels “F (2,50) = 1.113, p…

Q: A recent poll of 800 people who work indoors found that 208 of them smoke. If the researchers wnat…

A: The sample proportion can be calculated as: p=x/n=208/800=0.26 At a 98% confidence level, the z…

Q: The indicated IQ score, x, is

A: Let X represents the distribution of IQ scores. Given that X~N(mean= 100, SD= 15), then Z = (X -…

Q: Survey was conducted about real estate prices. Data collected is 164350, 254687, 355521, 449174,…

A: Given data set164350, 254687, 355521, 449174, 574267, 679633, 722906, 863873, 975508, 1011950,…

Q: A doctor at a local hospital is interested in estimating the birth weight of infants. How large a…

A:

Q: ..... The value of the test statistic is (Round to two decimal places as needed.)

A: Given :   sample size, n = 480 population proportion,p= 0.5 sample proportion…

Q: A federal report indicated that 17% of children under age 6 live in poverty in Nevada, an increase…

A: Given data, p=17%=0.17 E=2%=0.02 z-value at 99% confidence is Zc=2.576 n=?

Q: Ashudy w conducted to determine the proportion of people who dream in black and white instead of…

A:

Q: your car is more crowded than you think.  table 5.8 reports results from a 1969 personal…

A: We know that  Mean = sum of all observations /total number of observations

Q: A population has µ = 50. Which value of o would make X = 55 an extreme value out in the tail of the…

A: Part 1: Given μ=50              To find for what value of σ, X=55 will be an extreme value In the…

Q: The point estimate for p, p, is (Round to three decimal places as needed.)

A: Given : Sample Size, n = 1074 Number of successes, x = 346

Q: Suppose that Mark, a subject in this study, has a Percent Body Fat of 17.4 and a weight of 224.5…

A: The leverage of an observation is based on how much the observation's value on the predictor…

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A: Margin of error(E), E=z×p×qn From the above E, find n, n=zE2×p×q Here, E=0.04 There is no…

Q: Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years…

A:

Q: that the mean score of these 53 students is 147.9. Is this significantly different from the national…

A: Given: Sample size, n = 53 Mean,  Population mean,  standard deviation,

Q: A random sample of 354 persons showed that 206 do not have health insurance. Calculate the point…

A: Given data,n=354x=206p=?

Q: The following table summarizes the percentage frequency of admitted students in SQU (2018) Defect…

A: It is known that the total probability should be equal to 1. That is, ∑Px=1.

Q: Below is the table for the incidence of lung cancer following exposure to asbestos dust. We will…

A:

Q: b. Find an estimate of p2, the true proportion of less-experienced bidders who fall prey to the P2…

A: The number of less experienced bidders (n2) is 138.

Q: . A population with a mean of 10 has EX 250.How many scores are in the population?

A: Note: Hey there! Thank you for posting the question. For calculating number of scores in the…

Q: A survey of 100 fatal accidents showed that in 43 cases the driver at fault was inadequately…

A: We have given that , A survey of 100 fatal accidents showed that in 43 cases the driver at fault was…

Q: The test statistic is . (Round to two decimal places as needed.)

A: The descriptive analysis is conducted using EXCEL. The software procedure is given below: Enter the…

Q: Consider taking a point estimate from a randomly selected population of 120 students with a number…

A: The population is defined as a whole set of observations. It is difficult to deal with,…

Q: A doctor at a local hospital is interested in estimating the birth weight of infants. How large a…

A:

Q: A random sample of 1012 adults in a certain large country was asked "Do you pretty much think…

A:

Q: The value of the test statistic is (Round to two decimal places as needed.)

A: The test statistic formula is, t=x¯-μsn In the formula, x¯ is sample mean, μ is population mean, s…

Q: Waht sould we do with a large P-value?

A: The P-value is the probability we get the value of the test statistic, or something "more extreme"…

Q: 138 patients who received 10-mg doses of a drug daily, 33 reported headache as a side effect. Obtain…

A: We have given that Sample size n =138 Favorable cases x =33

Q: A doctor at a local hospital is interested in estimating the birth weight of infants. How large a…

A: Given information- Standard deviation (s) = 7 ounces Error (E) = 2 ounces The margin of error…

Q: The mean of the population is (Round to two decimal places as needed.)

A: The population is 508, 634, 545, 611 and 577.

Q: d. Give a 95% interval estimate of the number of fatal accidents per 1000 licenses in a city where…

A: Solution:  Given information: n= 42  Sample size  MSE= 0.3473  Mean square  error  The degree of…

Q: (a) What percent of the SAT verbal scores are less than 650? (b) If 1000 SAT verbal scores are…

A: Given: μ=515, σ=110 The corresponding z-value needed to be computed: The probability that s scores…

Q: What is the approximate percentage of students who scored between 29 and 71 on the test? Round to…

A:

Q: the temperature of a coffee cup is 185.3 degrees, is it a discrete or a continuos data set?

A: first we understooddefination of Discrete random variable→discrete random variable has a countable…

Q: A research poll showed that 1282 out of 2040 randomly polled people in a country favor the death…

A: Confidence interval:A range of values such that the population parameter can expected to contain for…

Q: A sample of birth weights of 48 girls was taken. Below are the results (in g):

A:

Q: A weight-loss clinic advertised that last month its patients, on average, lost 7 lb. Assuming that…

A: Here Given  Weight loss clinic advertised that last month its patients On average lost 7 lb.

Q: When computing a 95% CI for a population mean, the ____ is used as the point estimate.

A: Given that  When computing a 95% CI for a population mean, the ____ is used as the point estimate.…

Q: Suppose that out of 10,351 convicts who escaped from U.S. prisons, only 7767 were recaptured. Let p…

A:

Q: Suppose a biologist collected data on the weight of 50 lab rats that were 4 weeks old. The boxplot…

A: First of all, we know that A boxplot gives us 5 things: Minimum value.1st quartile, Median, 3rd…

Q: The 14th percentile is (Round to two decimal places as needed.)

A: Given that mean μ = 41standard deviation σ = 9we need to calculate P (X < x) = 0.14

Q: How many Biology students’ records need to be sampled to estimate the percentage who earn "A"s to…

A: The proportion is not provided therefore in worst case it can be assume as (p) 0.5. Margin of error…

Q: Is the number of runs scored by a baseball team during a season quantitative and discrete?

A: Discrete random variable: A discrete random variable takes the countable number of real values. This…

Q: According to the Distribution of Z table, ______________ % of area is below a Z value of -1.16?

A: Z value = -1.16 Percentage of area that is below a Z value of -1.16 is given as,

Q: When estimating the population proportion, how large a sample is needed to be 95% confident that the…

A: Here  sample proportion = 42/120= 0.35

Q: What percent of our campus is female? If no preliminary study is made to estimate, how large a…

A:

Q: A study at Harvard found that 44% of their students binge drink.  You are at Princeton doing a…

A: According to the provided information, a study at Harvard found that 44% of their students binge…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.