State the null hypothesis H0 and the alternative hypothesis H1 Find the z-test value find the critical value Can we conclude that more than 55% of high school students in the United States use computers for educational purposes? Yes or No?

Q: Alcohol abuse has been described by college presidents as the number one problem on campus, and it…

A: We have given that,  Sample size (n) = 10904 and favorable cases (X) = 2486 Then,

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: Followings are the explanation of the question Use the One sample Z proportion test for the given…

Q: 2) Random sample of 11 male high school students and 12 female high school students are selected…

A: Males :  N1 = 11  df1 = 11 - 1 = 10 Mean ( M1 = 560 )  Standard deviation ( S1 = 133.1)  Females :…

Q: 8)  A researcher wanted to determine whether there is any difference in the popularity of football…

A: a) A null hypothesis is a statement of no difference and the alternative hypothesis is simply the…

Q: 1.What would happen to the confidence intervals if you changed the level of confidence? 2.What…

A: The general formula for calculating width of the confidence interval for the population proportuon…

Q: In an attempt to document the percentage of teenagers in the United States who play video games for…

A: The process of drawing conclusions about the population parameters by using the sample statistics,…

Q: The State Superintendent of Schools consistently states that the average salary of all substitute…

A: Given Information: Sample size (n) = 8 The state superintendent of schools states that the average…

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: The objective of the question is to test the claim that the percentage of commercial truck drivers…

Q: Fewer young people are driving. In year A, 64.9% of people under 20 years old who were eligible had…

A: You may need to use the appropriate appendix table or technology to answer this question.Fewer young…

Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

A: Solution: Given information: n = 210 Sample size  p= 0.11 Population proportion

Q: A company executive claims that employees in his industry get 100 junk emails per day. To further…

A: Given Information: Consider the given dataset: 125, 101, 109, 94, 122, 92, 119, 90, 118, 122. The…

Q: According to the 2018 General Social Survey (GSS), 60% of all U.S. households have at least one pet.…

A: Here one proportion Z - test stats is applicable

Q: Alcohol abuse has been described by college presidents as the number one problem on campus, and it…

A:

Q: Sierra College students enrolled in an online Elementary Statistics course were asked to participate…

A: Given:   Desktop computer 31 laptop computer 113 Smart phone 6 Tablet 3 Total 153

Q: According to the U.S. Census Bureau, 11% of children in the United States lived with at least one…

A:

Q: Amage reported the results of its annual travel professionals survey. A total of 277 travel…

A:

Q: Last year, the marist poll conducted a national survey of adults and found that 35% responded "A lot…

A: Null and Alternate Hypothesis: H0: Response to this question by adults nationwide has not changed…

Q: In a survey conducted by CareerBuilder.com, employers were asked if they had ever fired an employee…

A: Solution: State the hypotheses Null hypothesis: That is, the proportion of employers has fired an…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Among 274 people over the age of 55, 76 dream in black and white, and among 323 people under the age…

Q: Suppose an SAT preparation course makes the following statement in their advertising brochure: “We…

A: Given that Suppose an SAT preparation course makes the following statement in their advertising…

Q: According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34…

A: The level of significance is 0.01 (=1%).

Q: In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism…

A:

Q: According the the U.S. Census bureau, the percentage of Santa Ana residents with a bachelor's degree…

A: From the provided information,

Q: A study of US residents is conducted to assess the relationship between gender and if they have…

A: Test is that whether there is relationship between gender and if they have cardiomyopathy.

Q: You are interested in whether level of education influences a person's exposure to the media. You…

A: Solution: From the given information, Here, it is needed to identify the two control variables that…

Q: t has been reported that 5% of U.S. households don’t own a smart phone, 35% own one smart phone, 40%…

A: The distribution of the smartphones in 100 sampled households is given as:No. of smartphonesNo. of…

Q: According to the most recent data, 10.6% of engineers (electrical, mechanical, civil, and…

A: Given  p=10.6%, n=75

Q: In June 2012 the Gallup organization conducted a pollusing a random sample of 1004 adults, aged 18…

A: From the given information, we have confidence Interval is 95%  Sampling error is 4 percentage…

Q: Hypertension is when an adult is classified as having high blood pressure (above 130 systolic blood…

A: Answer  X =1219 n =3532

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: State the hypotheses. That is, there is no evidence to conclude that more than one-third of…

Q: A company is interested in seeing if the average call time to its call center is more than/greater…

A: A company is interested in seeing if the average call time to its call center is more than/greater…

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: Given,   The sample proportion is,

Q: If 40% of all the students are taking four classes, and 60% of all the students are taking three…

A:

Q: An article published in the “American Journal of Public Health” describes the results of a health…

A: No. of 50 years of age or older male convicts in the administered health survey, The sample…

Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…

A: a) The sample proportion is p-cap = 205/1008           = 0.203 b) The population proportion p is…

Q: For Americans using library services, the American Library Association claims that at most 70% of…

A: Here, One sample Z test is applicable. x = 85 , n = 100

Q: An issue of Time Style and Design reported on a poll conducted on the shopping habits of wealthy…

A: Given data number of success , x= 410.0 sample size, n = 603 population…

Q: I am being told that the sample size answer of 384 given to me was incorrect. Is there any way this…

A: 12... Margin of error =0.05 At confidence interval 95% we have to find sample size

Q: 2) A researcher suspects that there is a relationship between substance use and sexual activity…

A: In statistics, for analysis purposes, we collect the data. According to the objective of the survey…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: The question is about hypo. testing Given : No. of people over the age 55 ( n1 ) = 303 No. of people…

Q: ulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. H:0 H₁ :0 (b) Determine…

A: It is given that  n1 = 265,    X1 = 99 n2 = 118,    X2 = 42   Note: According to Bartleby expert…

Q: Create a 95% confidence interval for the true proportion of adult North Americans that have…

A: We have given thatn=3532x=1219Confidence level (c) = 95% =0.95

Q: We want to investigate whether there exists gender bias on traffic stops by the police here in…

A: Given that, For females: Sample size, n1= 24314 and x1= 438 For males: Sample size, n2= 34095 and…

Q: Zobserved Zeritical left Zeritical right= We the null hypothesis. We conclude that the current…

A:

Q: This question refers to a survey of a university's faculty members on affirmative action policies…

A: The margin of error is a statistic expressing the amount of random sampling error in the results of…

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.