The proportion of the population in favor of a particular law was about 66%.  It is believed that the current proportion of the population in favor of the law has decreased.  To assess this, you collect a sample of n=340 people and 197 indicate being in favor of the law.  We wish to test the claim that the proportion of the population in favor of the law has decreased.  Symbolically, the claim would be expressed as the alternative hypothesis: Ha:p

Q: A survey of 100 doctors revealed that 2 out of every 5 doctors recommended Brand M deodorant. Based…

A:

Q: In a study of whether smoking causes lung cancer, researchers examined 2000 people.  About half of…

A: Four percent of the smokers developed heart disease by the end of the study period, whereas only one…

Q: A recent Australian study found that survey reports of TV watching time were associated with higher…

A: The logical conclusion is:d. People who watch a lot of TV are also likely to have other unhealthy…

Q: A pizza chain advertises that, in recent taste experiment in which their pizza (pizza A) was…

A: Expected value (E) =Total frequency 5

Q: A research study wanted to examine whether religious belief and gender are related in their state.…

A: There are two categorical variables which are gender and belief. We have to test whether gender and…

Q: says the holidays when inmates miss having holiday meals with their families. You want to test if…

A:

Q: A company held a blood pressure screening clinic for its employees. The results are summarized in…

A: d) The blood pressure with different age groups is given.

Q: Assume P (AU B) = .73, P (A) = .51, and P (B) = .47. Find P (AN B (AnB)

A:

Q: . Neil, a third-grader, asked 10 of  his classmates whether they prefer to wear shoes with laces or…

A: Neil's Sample Size: Neil asked 10 of his classmates. This is a relatively small sample size.Sample…

Q: Sally is interested in finding out if the political party affiliation of Americans who are…

A:

Q: ATV report conducted a survey of 954 people in Washington State and found that 43% of the population…

A: Solution We have given confidence level = 93%  confidence interval = ( 35%, 51%)

Q: how many pets they have (with options "none," "only one, 0 people without hypertension, 45% had only…

A:

Q: The director of student services at San Bernardino Valley College is interested in whether women are…

A: 1)

Q: What are the estimated proportions? What are the null and alternative hypothesis? Chapter 7 (see…

A: by bartleby policy i can give only one answer question

Q: According to Census data, in 1960 the population of the U.S amounted to 151.3 million persons, and…

A: The objective is to interpret the shifted population in the West from 1960 to 2000 in terms of…

Q: cher claims that 60% of students who take her class feel more enriched after completing it. It turns…

A: given data,  claims that 60% of students who take her class feel more enriched after completing…

Q: x = 7.5 SS = 5 = 3.5 S= 13 = 40 T = 25 z = 4 = 10 n= 4 え= 6.2:

A: a researcher asks a middle school, high school, and college student if they use Facebook and…

Q: d. What are the observed minus expected counts? e. What is the test statistic? How many degrees of…

A: The 2×2 contingency table is given as follows.   Red Yellow Green  Blue Row total Introvert 10…

Q: 40% of all people have cooties. 30% of all people play pattiecake and have cooties. What percent of…

A: Conditional probability is the chance of occurrence of an event given that another event has already…

Q: A geography test was given to a simple random sample of 500 high-school students in a certain large…

A: Given information: A geography test was given to a simple random sample of 500 high-school students…

Q: Should cell phone use be banned by drivers? 188 people took part in a survey. The answers are…

A: Given: 188 people took part in a survey. The answers are classified by the gender of the respondent…

Q: Residents in a city are charged for water usage every three months. The water bill is computed from…

A: INTRODUCTION :   HISTOGRAM: The Histogram is often useful to represent a frequency distribution…

Q: s achieving a basic skill level related to the location of the school? The results of a random…

A: a. Null Hypothesis: H0: The categories of subject and location are not related. Alternative…

Q: The sports section of the East Mule Shoe Gazette runs a weekly question that readers can answer…

A: Given that, After the local university’s football squad was beaten by its rival for the forty-second…

Q: You randomly sample 282 sexually active individuals and collect information on their HIV status and…

A: Null hypothesis: H0:  There is no relationship between HIV status and History STDs. Alternative…

Q: A statistician wishing to test a hypothesis that students score at least 75% on the final exam in an…

A: Solution :- Option :-   b. H0:  = 75 vs. Ha:  > 75. which is Right Tailed test of…

Q: In a local neighborhood, 45% of the houses have garages, 60% of the houses have a patio, and 30%…

A: From the provided information, P (Garage) = 0.45 P (Patio) = 0.60 P (Garage and Patio) = 0.30

Q: An eye doctor keeps track of whether people who come in for testing need glasses. When she separates…

A: In this case, it is needed to check whether the eye color is independent of the need for glasses.

Q: Dorinda is in second grade. She asks 6 of her classmates if they like to wear friendship bracelets.…

A: Random Sample should be taken in a way that they must be true representative of population.

Q: n a survey of 120 people regarding their tastes in desserts, the following results were obtained:…

A:

Q: low cost.  Based on past drug testing, the FAA reports that drug use is estimated at 0.017 among…

A:

Q: A way we could look at this would be to do a test of association on the 2x2 table constructed from…

A: a. The 2×2 contingency table is given:   Red Yellow Green Blue Column total Introvert 10 3 15…

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.