A candidate for election made a speech in a city. Among 500 voters from city A 59.6% are infavour of him where as among 300 voters from city B 50% are in favour of him. Test thesignificance between the differences of two proportions at 5% level.

Q: When comparing two population mean, failing to reject H, means that the two population means are…

A: It is given that H0 is not rejected.

Q: In a recent election, 63% of all registered voters participated in voting. In a survey of 275…

A: The percent of participation of voters is equal to: In the given case; when the observation sample…

Q: The executives at Sandbachian, inc., having recently solved their widget crisis, have another…

A: Let ‘x’ be the no of defective manhole covers i.e x=40 and n=800 sample propotion (P)=x/n p=40/800…

Q: In a recent survey of 100 new vegetarians, 74 said that their new

A: Given information: The sample size is 100. Out of 100 new vegetarians, 74 said that their new…

Q: When testing for the difference between 2 population variances with sample sizes of n1=8 and n2=10,…

A:

Q: An analysis of variance produces SSbetween = 30, SSwithin = 60, and an F-ratio with df = 2, 15.  For…

A:

Q: A research report from an independent-measures study states that there are significant differences…

A: The degrees of freedom for treatment (k-1) is 3.

Q: quality conscious disc manufacturer wishes to know the fraction of disks his company makes which are…

A: Given Sample size =865 X=112

Q: A factory for the production of light bulbs took a random sample of 200 units and found that 18 of…

A: The sample size is N=200N = 200 the number of defective cases is X=18X = 18 and the sample…

Q: A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. How large a…

A: Given,          Sample proportion  P∧=0.09          Margin of Error∈=0.04          and…

Q: A fast food chain surveyed a random sample of students to determine what pizza they prefer. Cheese…

A:

Q: In 2001​, researchers investigated the effect of​ weed-killing herbicides on house pets. They…

A: a) Given that n1=840x1=445n2=116x2=20 Consider,…

Q: kindly assist,   An epidemiologist who is working in Capricorn Department of Health investigated…

A: We have given that  Sample size n =10000 Favorable cases x =275 Sample proportion p^=x/n  =275/10000…

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: Givenconfidence level = 90%Margin of error(E)=2%=0.02p^=0.45

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: medical researcher conjectures that smoking can result in the wrinkled skin around the eyes. The…

A: Given: Number of smokers, n1=120 Number of nonsmokers, n2=141 Number of smokers having prominent…

Q: In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were…

A: From the provided information, 81% of respondents said that their jobs were sometimes or always…

Q: With a percentile of 68 on a test of ambience given to mindanao resorts, bung gumni resorts score of…

A: Given, With a percentile of 68 on a test of ambience given to Mindanao resorts, bung gummi resorts…

Q: In a study examining the relationship between coffee consumption and heart disease, the researcher…

A: Correlation: It measures the strength of the relation between the variables. The sign of the…

Q: In 1992​,researchers investigated the effect of​ weed-killing herbicides on house pets. They…

A: Given, In 1992​,researchers investigated the effect of​ weed-killing herbicides on house pets. They…

Q: In a random sample of 1000 persons from U.P. 510 were found to be consumers of cigarettes. In…

A:

Q: A research report from an independent-measures study states that there are significant differences…

A: Given information- We have given a report from an independent- measures study. F(3, 48) = 2.95, p…

Q: A poll of 80 students selected at random at Midtown University found that 20 were in favor of a fee…

A: Given  Total student in sample = 80 students No. of student in favour of feet hike = 20 students

Q: n the cancer institute of Philippine General Hospital, there were 529 patients who undergo…

A:

Q: A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which…

A:

Q: A coworker says she needs to test 5000 subjects in order to have enough power to detect a…

A: Here for the above question, effect size is related with a sample size. As we know a test is…

Q: A quality-conscious disk manufacturer wishes to knoww the fraction of disks his company makes which…

A: Given, The no. of sample, n =5431 The number of defective, x = 4943

Q: Public relation companies conducted two surveys about deodorants. The first survey asked a random…

A: From the given information, the number of men (n) is 500.

Q: The sample of 400 tomatoes gave 310 red and 90 green ones. Does it contradict the hypothesis of…

A: Null hypothesis: H0:  The proportion of red and green tomatoes is equal to 3:1. Alternate…

Q: Public relation companies conducted two surveys about deodorants.  The first survey asked a random…

A: Solution CI=(0.1,0.3) Choose statement 'A'

Q: In the study conducted by selecting 100 female and 100 male students in order to test the claim that…

A: given that  p- value=0.0228

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Sample size (n) =750 and p0 = 0.54

Q: To study the mean blood pressure of all people in her state, Christine samples the population by…

A:

Q: 10. In two large populations there are 30% and 25% respectively of fair haired people. Is This…

A: Given that  For first population  p1=30%=0.30 Sample size n1=1200 For second population  p2=25%=0.25…

Q: group of children are surveyed about their favorite snacks . The results of the survey are shown…

A:

Q: le of teenage drivers living in Dover City for H0: p = 0.50 and Ha: p < 0.50, where p is the…

A: Given: Hypothesis: H0 : p=0.50Ha : p&gt;0.50 Sample size, n = 150 Level of significance, α=0.05 Part…

Q: Blank are more representative of a population, but blank are easier to obtain

A: The sample is a set of units that is obtained from a population, which represents the population.…

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

A: Givensample size(n)=200x=128α=0.05

Q: A newspaper article about the results of a poll states: "In theory, the results of such a poll, in…

A: Margin of error = 0.05 Sample proportion = 0.99 z critical value at 0.05 is 1.96

Q: A survey of 120 fatal accidents showed that in 24 cases the driver at fault was inadequately…

A: Point estimate:   The population parameter which is estimated by using sample statistic is termed as…

Q: If the population proportion is 0.7 . A researcher wants the margin of error to be 0.20 and the…

A: Given  pcap=0.7, Zcritical=1.96 at alpha=0.05 MOE=0.20

Q: A poll is conducted and shows that 46% of homes have a landline, with a margin of error of 3%. a.…

A: Given that a poll is conducted and shows that 46% of homes have a landline with a margin of error of…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: Given : n = 700 p = 0.52

Q: Public relation companies conducted two surveys about deodorants. The first survey asked a random…

A: According to given info  68% men are dissatisfied that means 32% are satisfied with the…

Q: Q4. A researcher wanted to estimate the difference between the percentages of users of two brands of…

A:

Q: as one variable decreases, the other variable increases as one variable decreases, the other…

A: We have given that,  A correlation coefficient of 0.05 means that?  We have to check the correct…

Q: In a sample of 88 children selected randomly from one town, it is found that 8 of them suffer from…

A: Given information- Sample size, n = 88 It is found that 8 of them suffer from asthma. So, x = 8 So…

Q: Fill out this paragraph if a posthoc analysis is appropriate.) A posthoc analysis using…

A: Since both the assumptions of normality and homogeneity of variance are satisfied, therefore…

Q: Public relation companies conducted two surveys about deodorants. The first survey asked a random…

A: p1 = Proportion of men who were dissatisfied with the effectiveness of natural deodorants p2 =…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: using the given data fill all the blanks required

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.