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: Based on information from a previous study, r1 = 37 people out of a random sample of n1 = 97 adult…

A: The provided information are:

Q: 7:21 A ll 85% A news article that you read stated that 51% of voters prefer the Democratic…

A: a. It is observed that the test is one prop Z test. b. Hypotheses: Let p be the proportion of voters…

Q: In recent years, approximately 55% of eligible voters take the time to vote in presidential…

A: The objective of this question is to determine whether there is convincing evidence at the 0.01…

Q: Based on information from a previous study, r1 = 38 people out of a random sample of n1 = 104 adult…

A: The parametric test contain the assumption of normally distribution. But the non parametric test is…

Q: A basketball player with a 65% shooting percentage has just made 6 shots in a row. The announcer…

A: The basketball player has a shooting percentage 65% . So, the probability that the player will make…

Q: Suppose you work as a researcher for a local anti-gambling advocacy group. You decide to conduct a…

A: We have given that,  Average (x̄) = 39.64, sample size (n) = 29 and standard deviation (s) = 112.84…

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: A student wondered what proportion of a large jar of thousands of marbles were red and speculated…

A: From the provided information, The population proportion (p) = 0.30 Sample size (n) = 50, out of…

Q: In 1965, about 44% of the U.S. adult population had never smoked cigarettes. A national health…

A: Given Information: Population proportion (p) = 0.44 Sample size (n) = 1360  Sample proportion (px) =…

Q: Do teachers find their work rewarding and satisfying? The article “Work-Related Attitudes” reports…

A: Given information- Significance level, α=0.05 Let, p1 = proportion of the elementary school teachers…

Q: n automobile owner found that 20 years ago, 74% of Americans said that they would prefer to purchase…

A:

Q: ased on information from a previous study, r1 = 38 people out of a random sample of n1 = 105 adult…

A: Introduction: Denote p1, p2 as the true population proportions of people who believe in…

Q: Alexis surveys a random sample of 80 students at his school and finds that 22 of themusually walk to…

A: We can find the answer as below

Q: A physician wants to determine if a supplement is effective in helping men lose weight. She takes a…

A: It is given that the sample size (n) is 6 and the hypothesized test is left- tailed. The level of…

Q: A very large study showed that aspirin reduced the rate of first heart attacks by 44 %. A…

A: From the provided information,A very large study showed that aspirin reduced the rate of first heart…

Q: A researcher would like to determine whether there is any relationship between students’ grades and…

A: From the provided information, Sample size (n) = 100 Sample mean (M) = 3.25 Population standard…

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 researcher has participants expecting to receive either painful or mild electrical shocks during a…

A: Usually in survival analysis studies we can use both parametric and non-parametric statistics. For…

Q: The manufacturer of a new hybrid sports utility vehicle (SUV) states that, on average. it gets at…

A: Given: The manufacturer of a new hybrid sports utility vehicle (SUV) states that, on average. it…

Q: An experimenter investigated the effects of blue light exposure on people’s sleep quality.…

A: In the given research problem, there are two independent samples- Blue light and No Blue light. The…

Q: A pharmaceutical company wants to test whether their the incidence of side effects (i.e. adverse…

A: Normal distribution is a continuous distribution that has so many real-life applications. z…

Q: Based on information from a previous study, r1 = 30 people out of a random sample of n1 = 107 adult…

A: Here is given that r1 = 30    r2 = 46    n1 = 107   n2 = 107 we will find proportions of both…

Q: Based on information from a previous study, r1 = 38 people out of a random sample of n1 = 106 adult…

A:

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

A: Local: Sample size n1=100 Number of successes x1=65 National: Sample size n2=100 Number of successes…

Q: You have collected BMI data on a group of 30 college-age females. You are curious to find out how…

A: The different types of t test are: one sample t test independent samples t test dependent samples t…

Q: Based on information from a previous study, r1 = 39 people out of a random sample of n1 = 105 adult…

A: The test statistic for the difference of proportion is, Z=p1-q1P^(1-P^)1n1+1n2wherep1 and p2=sample…

Q: Based on information from a previous study, r1 = 37 people out of a random sample of n1 = 97 adult…

A: The proportion of adult Americans who did not attend college believe in extraterrestrials is, Thus,…

Q: A survey by a magazine stated that 14% of men said they used exercise to reduce stress. A random…

A: Solution: Given information: n= 100 Sample size of men x= 10 men said they used exercise to relives…

Q: Zenon decided to Investigate whether students at his school prefer name-brand potato chips to…

A: Given : Randomly selected students ( n ) = 50 Null and alt. hypo : H0 : p = 0.5  Ha : p > 0.5

Q: A survey is conducted to determine if there is a difference in the proportion of students, parents,…

A:

Q: The null and alternative hypotheses would be: Ho: ?v Select an answerv (please enter a decimal) H1:…

A:

Q: Based on information from a previous study, r1 = 34 people out of a random sample of n1 = 105 adult…

A: Given  r1=34, n1=105, r2=50, n2=105  p1^=r1/n1  p2^=r2/n2

Q: A decade-old study found that the proportion of high school who felt that ‘getting rich was an…

A: We have to find given hypothesis.

Q: Consider the contingency table given below. Rows 1 Rows 1 2 2 Use the contingency table to calculate…

A: The table shows the contingency table with 2 rows and 3 columns.

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.