A newsletter publisher believes that 29% of their readers own a laptop. Is there sufficient evidence at the 0.05 level to refute the publisher's claim? State the null and alternative hypothesis for the above scenario

Q: Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high…

A: Given that 47% of parents of children in high school felt it was a serious problem that high school…

Q: According to the Centers of Disease Control, about 20% of American young people between the ages of…

A: Given, p^=0.2 According to the Centers of Disease Control, about 20% of American young people…

Q: According to the Department of Justice, the mean length of imprisonment for motor- vehicletheft…

A: a). Let µ be the mean length of imprisonment. The null hypothesis for the test is given below: Null…

Q: A city had an unemployment rate of 7%. The mayor pledged to lower this figure and supported programs…

A: The claim is that the unemployment rate had actually decreased and hypothesized proportion is 0.07.

Q: State the statistical hypotheses (null and alternative) for a two-tailed test against a known…

A: In this context, the known population mean is 90.

Q: Corona virus has affected different states differently in the U.S. In New York out of 142 ICU…

A: State the hypotheses.   Let p1 denotes the population proportion of deaths among ICU patients in the…

Q: Ride services are on the rise, such as Uber and Lyft. You wondered if the recent news reports of…

A: Given  19 males use ride services and 11 do not. 12 females use ride services and 18 do not.

Q: Beer and Cider Consumption. According to the National Beer Wholesalers Association, U.S. consumers…

A: There are two types of errors, they are type 1 and type 2 error. Type 1 error: Probability of…

Q: What type of error is possible in this situation?

A: A 2011 survey, by the Bureau of Labor Statistics, reported that 91% of Americans have paid leave. In…

Q: A research center claims that at least 23% of adults think their taxes will be audited.  A random…

A: Yes, there is a enough evidence to reject the claim Explanation:Step 1 : Formulate the hypothesis…

Q: The power of the sample to detect the observed difference in population proportions (a = 0.05,…

A: 1. From the information, the claim of the test is that the population proportion is greater than…

Q: Suppose a hypothesis test was performed with a level of significance of 0.05. Then if the null…

A: Level of significance is the type 1 error which is rejecting the true Null Hypothesis.  So here the…

Q: Approximately 10%10% of Americans are left-handed (we will treat this as a known population…

A: From the provided information, Sample size (n) = 105 From which 16 were left-handed.

Q: The U.S. Department of Labor stated that the national unemployment rate was 4.9%. Of a sample of 90…

A: The question is the one sample proportion test.Let x denote the national unemployment…