A social worker in a certain city claimed that only 25% of the children between 19 and 35 months had not had all of their vaccines. You believe the percentage is higher. In order to test the social worker’s claim, you contact 145 families that have a child between 19 and 35 months and find that 44 of the children had not had all of their vaccines. Can the social worker’s claim be supported to a level of significance of α = .02, test the hypothesis.

Q: An article in a journal reports that​ 31% of American fathers take no responsibility for child care.…

A: Given, Population proportion P=31%=0.31 Sample size of fathers n=235 Number o fathers who did not…

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: It is given that the proportion of fatal traffic accidents in the country in which the driver had a…

Q: Are most student government leaders extroverts? According to Myers-Briggs estimates, about 82% of…

A: Given Information: Probability of college government leaders are extroverts (po) = 0.82 The…

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: The random variable X follows normal distribution. We have to test whether the region has a higher…

Q: In a clinical trial, 17 out of 900 patients taking a prescription drug complaint of flu like…

A: From the provided information, Sample size (n) = 900 Out of which 17 patients taking a prescription…

Q: It was reported that only one job vacancy was available for three recent college graduates. The main…

A: Given that data  Sample size n =100 Favorable cases x =60 Sample proportion p^=x/n  =60/100 =0.60

Q: A study of cats and dogs found that 29 of 50 cats and 19 of 50 dogs slept more than 10 hours  per…

A: The proportion of the sample taken from the population is tested using the z-test. If the proportion…

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Given thatSample size (n)=113Population proportion=0.34Number of positive BAC(x)=52We have to find…

Q: Historically, 15% of all Americans claim to have seen a UFO.  A paranormal researcher claims that…

A: Consider that p is the true proportion of Americans, who claimed to have seen a UFO.

Q: 20 out of 200 men randomly selected in a region and 30 out of 300 women are against vaccination.…

A: From the provided information,

Q: According to a survey conducted by the Association for Dressing and Sauces, 85% of American adults…

A: The random variable eats salad at least once a week follows binomial distribution. X ~ B (n, p) The…

Q: Are the conditions for inference met

A:

Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of…

A: Given information- Sample size, n = 92 Sample proportion is- Hypothesis Formulation-…

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: It is given that:Sample size: Number of positive BAC in sample: Level fo significance: We have to…

Q: freshmen business majors? 366 of the 673 freshmen psychology majors from a recent study changed…

A: From the given information we conduct z test for two proprtion.

Q: A manufacturer claims him market share is 60%.However a random sample of 500 clients show that only…

A: The objective of this question is to test the manufacturer's claim that his market share is 60%…

Q: A professor claimed that a majority (more than 50%) of her students believe in ghosts. To test her…

A: What is the alternative hypothesis for this test? From the given information, Consider, x be random…

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Solution-: Given: P0=0.39,x=53,n=105 Because, n*P0*(1-P0)=...10, the sample size is ....5% of the…

Q: In a recent study; it was found that 62 percent of college students drink heavily and drive.…

A: The hypotheses can be constructed as: Null hypothesis: H0: p = 0.62 Alternative hypothesis: H1: p…

Q: se a a = 0.05 level of significance, find or compute the critical value of F. (Round nitical value…

A: Given, By using excel-data-data analysis-ANOVA single factor a-1)   a-2) F critical  = 4.7472

Q: A professor claimed that a majority (more than 50%) of her students believe in ghosts. To test her…

A: GivenClaim is that majority of students believe in ghosts.Number of students = n = 250Number of…

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: o combat antibiotic resistance, the Quality Improvement Consortium recommends a throat swab to…

A: (a-1) According to the provided data, the null and alternative hypotheses are; Therefore, the first…

Q: A study was conducted in Austria to determine if the likelihood that a child will have hay fever…

A: Z test

Q: After a sample of n=25 high school students took a special training course, their SAT scores…

A: Given Data: n=25 MD=18SS=9600 Standard Deviaton=SSn-1=960024=400=20

Q: A manufacturer claims him market share is 60%. However a random sample of 500 clients show that only…

A: X=275, n=500, p=60%, level of signicance=1%

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Given : p = 0.37 n = 114

Q: of LO %24 2. Based on their records, a hospital claims that the proportion, p, of full-term babies…

A: For the given data Perform z test for one proportion test

Q: A random sample of 800 students is given an injection to prevent a certain type of flu. They are…

A: We have given that  Sample size n= 800 Favorable cases x= 620  Sample proportion p^=x/n

Q: Women athletes at a certain university have a long-term graduation rate of 67%.Over the past several…

A: a) The level of significance is 0.10. b) State the null and alternative hypotheses: The claim is…

Q: Imagine you are a statistical consultant and your client, a weightlifting supplement company, is…

A: Introduction: It is required to state the research question, identify the parameter, and provide the…

Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of…

A:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: We have given thatp0 = 0.34n = 113x = 52Significance level () = 0.05

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A:

Q: For your study on the food consumption of teenage males, you randomly selected 20 males and ask each…

A: From the provided information,The data values are as follow:3.3, 4.1, 3.5, 2.7, 3.4, 3.3, 4.8, 3.4,…

Q: 31% of all pygmy softshell tortoises have stripes on their shells. A herpetologist in Cititon…

A:

Q: 31% of all pygmy softshell toises have stripes on their shells. A herpetologist in Cititon collects…

A:

Q: Are freshmen psychology majors just as likely to change their major before they graduate compared to…

A: