Historically, voter turnout for political elections in Texas have been reported to be 54%. You have been assigned by a polling company to test the hypothesis that voter turnout during the most recent election was higher than 54%. You have collected a random sample of 90 registered voters from these elections and found that 54 actually voted. Use the p-value approach to test this hypothesis with α = 0.02. Explain.

Q: A p-value of 0.02 means that you must: a. Reject the null hypothesis b. Accept the null hypothesis…

A: Given problem Given that   A p-value of 0.02 means that you must : Ans) Option d Recode your…

Q: In a previous year, 61% of females aged 15 and older lived alone. A sociologist tests whether this…

A: We have to find test statistics and p value...

Q: Previous research has established that nationwide, for older adults, the average score on the Beck…

A: Given: μ=8.13σ=1.56n=200x¯=8.45α=0.01

Q: in preparation for a simulation model, a KS test has been used to check the goodness-of-fit of a…

A: Kolmogorov-Smirnov test is used for determining the sample for checking the normality.  F(x) =…

Q: A random sample of n = 16 scores is obtained from a population with σ = 12. If the sample mean is 6…

A: Consider, Sample size (n) = 16 Standard deviation (σ) = 12 (Sample mean – Population mean) = 6

Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…

A: a. Denote p1, p2 as the true population proportions of wildfires caused by human in south and west,…

Q: With H1: p + 0.3827, the test statistic is z = %3D 2.324. For 0.1 significance level what are the…

A: Given : H1 : P ≠0.3827 Z = 2.324 Level of significance = 0.1

Q: A recent drug survey showed an increase in use of drugs and alcohol among local high school seniors…

A: Denote p1, p2 as the true population proportions of drug users for local and national seniors…

Q: A researcher is interested in the effect of the pandemic on social media use among college students.…

A: a) Here, The researcher is interested to know whether the students spend more time on social media…

Q: A researcher claims that the incidence of a certain type of cancer is less than 5%. To test his…

A: In this context, a researcher claimed that the proportion of incidence of particular type of cancer…

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A: (a) The test is that the proportion p1 of all depressed individuals taking Resithan who find relief…

Q: A company that produces cranberries knows that about 7% of its cranberries are bruised in the…

A: It is given that the p-value is 0.004.

Q: Lisa wants to determine if graduates from her collegeearn different incomes than do graduates from…

A: Let μ denotes the population mean income of the graduates from Lisa's college. The average income is…

Q: In a previous year, 57% of females aged 15 and older lived alone. A sociologist tests whether this…

A: Given data is appropriate for z-test for single proportion because the sample size is large…

Q: A sample of n = 4 scores is selected from a population with μ = 50 and σ = 12. If the sample mean is…

A: Given datan = 4μ = 50 and σ = 12, sample mean M= 56z-score is given by

Q: Biologists were studying the proportions of cats that had spotted markings on their fur in two…

A: Correct answer is  (A)

Q: A researcher wants to determine if a new advertising campaign improves the amount of time kids spend…

A: From the above data  We are given that A researcher wants to determine if a new advertising campaign…

Q: A large national union claims that the proportion of women in the union is significantly different…

A: Denote p as the true proportion of women in the union.

Q: A recent drug survey showed an increase in use of drugs and alcohol among local high school seniors…

A: From the given information, it can be observed that the samples involve the difference in…

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

A: Given X=19 N=100 P=0.19 Alpha=0.05

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A: Given, n1 = 100, n2 = 100 p1 = 67 and p2 = 61

Q: A random sample of n = 49 scores is obtained from a population with σ = 14. If the sample mean is…

A: It is given that  n=49 σ = 14 Population mean =μ Sample mean,x=4.5+μ

Q: Two researchers are testing the null hypothesis that a population proportion p is equal to 0.30, and…

A: The given null and alternative hypotheses are: H0:p=0.30H1:p=0.30 The sample proportion for…

Q: A recent drug survey showed an increase in use of drugs and alcohol among local high school seniors…

A: Given information- Significance level, α=0.05 Let, p1 = proportion of women p2 = proportion of men…

Q: How do we find the gamma and the p-value to evaluate the hypothesis that people who are more…

A: Given information: The output for the association test is given.

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A: From the provided information,

Q: Historically, the proportion of people who trade in their old car to a car dealer when purchasing a…

A: Solution: Given information: n= 115  Sample size  x= 46 success  p^=xn=46115=0.40 sample proportion…

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A: From the provided information,

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

A: The random variable voters follow binomial distribution. We have to test whether the proportion of…

Q: Historically, the proportion of people who trade in their old car to a car dealer when purchasing a…

A: use the theory of testing of proportion .using Z test

Q: f we set the criterion probability (alpha) at .05, and we are conducting a one-tailed test where we…

A: Significance level α=0.05 We are conducting a one tailed test, where we are testing attitude scores…

Q: A test of body reaction to the Malaysian citizens who have taken their vaccine was conducted.…

A: i)   It is given that there is total 250 citizens.

Q: If I have a sample of 20 people what is my T-threshold for a two-tail test and an alpha of 0.1…

A: Given: Sample size (n)=20 Level of significance α=0.1%=0.001 Test is two tailed.

Q: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of…

A: we have given that  For sample 1, we have that the sample size is N_1= 597N1​=597, the number of…

Q: A major credit card company is interested in the proportion of individuals who use a competitor’s…

A:

Q: You complete a hypothesis test using alpha = .05 and based on the evidence from the sample, your…

A: Researchers do a Hypothesis test to decide what is really happening withe the given data, there are…

Q: adult population play video games in their leisure time. A random sample of 195 U.S. adults found…

A: Solution

Q: A researcher is interested in the effect of the pandemic on social media use among college students.…

A: 1) The researcher wants to test the effect of the pandemic on social media use by college students.…

Q: In the population of senior students at Shermer High School, the proportion who plan to attend…

A: From the provided information, Population proportion (p) = 0.64 Sample size (n) = 100 Sample…

Q: the proportion of people who dream in color is different than the proportion in the 1940’s? What is…

A: Given : In a recent study of a random sample of 113 people, 92 reported dreaming in color. In the…

Q: The mayoral challenger claims that less than 30% of residents over the age of 25 have bachelor’s…

A:

Q: An engineer tests air conditioner compressors made with a new design to see if fewer have…

A: Given : Z =-1.82 Using Z score value we find how much time standard deviation away from mean.

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A:

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

A: P-value = 0.0027

Q: A random sample of 100 male employees showed that 42 are working from home while a random sample of…

A: Solution: Given information: n1=100 Sample size of male employeesn2=100 Sample size of female…

Q: In a random sample of 320 cars driven at low altitude, 40 of them exceeded the standard 10 grams of…

A: Solution: It is required to find the test statistic. The formula for finding the test statistic is:…

Q: sample of 100 high income voters and 40 out of a sample of 75 low income voters supported a decrease…

A: Given : x1= 60.0 n1= 100 x2= 40.0 n2= 75 significance level, 0.05

Q: A major credit card company is interested in the proportion of individuals who use a competitor’s…

A: The test hypotheses are:  H0: p=0.65 vs Ha: p>0.65. It is given that the p0=0.70, the p-value is…

Q: The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a…

A: Introduction: Denote μ as the true average score in 2019.

Q: A random sample of 100 voters is taken to estimate the proportion of a state’s electorate in favor…

A: Here, the sample size is 100 and the proportion of a state’s electorate in favor of increasing the…

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.