You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly different from 0.22. Your sample data produce the test statistic z = 3.03 . Find the pvalue accurate to 4 decimal places.

Q: A retail store is considering adding a new product line to its inventory. The store wants to know…

A: Sample size, N = 125favourable cases, x=70Confidence level, cl = 0.90level of significance,  = 0.10

Q: You are conducting a study to determine if there is a significant difference between average adult…

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Q: Quartering a positive mean (dividing by 4) has what effect on the normal curve?

A: The normal distribution: A continuous random variable X is said to follow normal distribution if the…

Q: Estimate the chance that the sample proportion was more than 45% using a normal approximation.

A: Given information: Given that , 40 % of the primary doctors have made claim that their patients…

Q: A publisher reports that 65% of their readers own a laptop. A marketing executive wants to test the…

A: Here the given information is A publisher reports that 65% of their readers own a laptop. A…

Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…

A: Denote p as the true proportion of the voters who prefer candidate A.

Q: What statistical test should he use to analyze the data? a. Independent Samples t-test b. Chi…

A: From the given data, we have to test whether female employees are more likely or less likely to be…

Q: samples of 500 persons each, and using the 0.01 level of significance, can we conclude that the…

A: It is given that For conventional PC, sample size n1 = 500, sample proportion = 0.80 For touchscreen…

Q: What is the standard error for the estimate of the difference in proportions in the male and female…

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Q: In 2011, a U.S. Census report determined that 62% of college students are working students. A…

A: The given values are:Proportion of working students according to the U.S. Census report,…

Q: Bernadette is studying the average height of male and female antelopes. The height of antelopes has…

A: Here we want to find the P value for Z = - 1.75

Q: A researcher is interested in the impact of joining a weight loss program in the past 12 months on…

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Q: Explain how can we find the corresponding z-score of an area and a percentile.

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Q: What percentage of infants who test positive using the test will actually have Down’s syndrome?

A: Let us define some events  A : an infant has Down's syndrome.  B : an infant does not have Down's…

Q: A test is scaled so that the mean score is 490 and the standard deviation is 100. What percentage of…

A: Given information μ=490 And σ=100 We have to find the percentage of students taking this test should…

Q: What kind of test is used to solve the test statistic value for the population proportion?

A: We want to tell you what kind of statistic and test are used for population proportion.

Q: A marketing expert for a pasta-making company believes that 48% of pasta lovers prefer lasagna. If 6…

A: Given that Sample size n =25 Favorable cases x =6 Sample proportion p^=x/n =6/25 =0.24

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

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Q: Systolic blood pressure measurements are taken from the right and left arms of the same women. What…

A: If the data is not normal  And it also the paired data then  Sign test is used for the analysis

Q: A research study examined the effects of a new drug versus an old drug on hypertension. There were…

A: The objective of this question is to determine if there is a significant difference in the…

Q: uct a survey on your college campus to learn about the political awareness of students. You want to…

A: The critical value from standard normal table at 95% confidence level will be:

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given : Mean = μ = 0.36  Level of significance = 0.05 p^ = xn    = 31118    = 0.2627

Q: An analysis was conducted to determine whether the average height of the 25 girls in the same class…

A: Here Avg height of 25 girls in the Same class is difference from population mean is checked Here…

Q: A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many…

A: The sample size is defined as the number of observations used for determining the estimations of a…

Q: What is Statistical Measure of the Amount of Variation in a Population?

A: Standard deviation: The standard deviation indicates by how much each observation differs from a…

Q: A publisher reports that 24% of their readers own a particular make of car. A marketing executive…

A: z-test for one-proportion A one-proportion z-test is a statistical method for hypothesis testing…

Q: compare the breathing rate before and after breath holding. chose the correct statistical test what…

A: For comparing the breathing rate before and after breath holding , we will be measuring the…

Q: A researcher wants to examine how a new intervention helps children learn to read. A random sample…

A: In the provided information, the one sample t-test will be used for measurement because it is used…

Q: A researcher wants to evaluate the effectiveness of a patch he thinks will significantly decreases…

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Q: An investigator decided to conduct a research to describe the average number of females in each…

A: The number or values calculated from the sample data are called sample statistics. The number or…

Q: lab supply company sells pieces of Douglas fir 6 inches long and 2.5 inches square for force…

A: From the given information, Population standard deviation=3500 Margin of Error=700 Confidence level…

Q: The average height of young adult males has a normal distribution with standard deviation of 2.8…

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Q: (Round to four decimal places as needed.) (e) Using the distribution from part (c), would it be…

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Q: You are testing the daim that the proportion of men who own cats is larger than the proportion of…

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Q: Find the standardized test statistic. z= (Round to two decimal places as needed.

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Q: You are conducting a study to determine if there is a significant difference between average adult…

A: It is given that n1 is 45, n2 is 60.

Q: The length of bolts produced in a machine shop are normally distributed with mean length 11.8cm. A…

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Q: Do you agree with the statement that “r=0.8 implies that 80% of the data are explained”

A: Correlation: Correlation is the measure of association between two variables in which one variable…

Q: A cybersecurity team would like to detect the malwares in the software. They detect more than 42.5%…

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Q: if the 90% G for the population mean is (-2.58, 7.54) what is the sample mean O a 248 Ob. 10.12…

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Q: The mean GPA for 102 residents of the local apartment complex is 1.8 What is the best point estimate…

A: Solution: Given information:  n = 102 Sample size  x = 1.8 Sample mean