Babies and younger boys are more likely to be diagnosed with peanut allergies. To test this claim a group of researchers tested the allergies among a group of boys and girls aged below 18 years.   A total of 540 kids were selected randomly and asked to eat a small amount of peanut.  Group n x Boys 280 120 Girls 260 90 Do boys have a higher chance to be diagnosed with a peanut allergy? Calculate the test statistic.  Calculate p-value.

Q: 2. Researchers wanted to compare the effectiveness of three diet plans. 78 subjects were randomly…

A: VariableDietSample sizeMeanSt DevWeight LossA242.8831.507B273.0262.523C275.1482.396

Q: Find the indicated margin of error. Out of 260 trials, 150 turned out positive. Find the margin of…

A: It is given that the sample size (n) is 260 and the number of positive trials (x) is 150.

Q: In the state of Kentucky, there are 228 eight year olds diagnosed with ASD out of 18,462 eight year…

A: In the state of Kentucky, there are 228 eight year olds diagnosed with ASD out of 18,462 eight year…

Q: ne survey showed that among 766   randomly selected subjects who completed four years of​ college,…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: uno viruses typically cause common colds. In a test of the effectiveness of echinacea, 42 of the 48…

A: We want to find the 95 % CI for difference in population proportion (p1-p2)

Q: Find the indicated margin of error. Out of 330 trials, 150 turned out positive. Find the margin of…

A:

Q: How many repair records should be sampled if GM wants the population mean number of miles driven…

A: 1. The critical value of t-distribution at 59 degrees of freedom can be obtained using the excel…

Q: In 2016, the US poverty rate was 12.7%. During that year, 375 families where randomly selected in…

A: From the given information, let X be the number of families were found to be living below the…

Q: a. H0: ______________ b. HA: ______________ c. Type of hypothesis test: __________________

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: increased incidence of squeaking. Assume that in one study of 145 individuals who received ceramic…

A:

Q: A study reports that 75 percent of young adults in a county get their news from online sources. A…

A: One proportion z test:   One proportion z test is used for comparing the observed population…

Q: Newborn babies are more likely to be boys than girls. A random sample found 13,573 boys were born…

A: The claim of the test is there is sample evidence that the birth of boys is more common than the…

Q: ou are testing the claim that the proportion of men who own cats is significantly different than the…

A: given data, sample of 100 men, and 10% own cats.n1=100p^1=0.10x1=0.10*100=0.10 You sample 80 women,…

Q: The average one-ounce chocolate chip cookie contains 128 calories. A random sample of different…

A:

Q: Determine whether the results below appear to have statistical significance, and also determine…

A: Practical significance: The practical significance states that even if the treatment tested is…

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of​ echinacea, 36 of the…

A: From given data we have ; x1=36 , x2=94 n1=42 , n2=107 the sample proportions as shown below:…

Q: torists do not have motor vehicle insurance. A random survey amongst 150 motorists found that 54 do…

A: A random survey amongst 150 motorists; n=150

Q: What kind of test should be used? A. One-Tailed B. Two-Tailed C. It does not matter. (b) The test…

A: Given that Sample size n = 10 Population SD = 10.9 Level of significance = 0.01 Note : According to…

Q: A poll found that 83% of American adults believed that there was a conspiracy in the death of…

A: Given  Population proportion p=0.83, X=869, n=sample size=1060 Level of significance ɑ=0.10

Q: Determine the sample size for a on-line survey with a variability of 30% and a 95% confidence…

A: Sample size n=z2(p*q)/e2

Q: A rare birth defect occurs in approximately 0.5% of all cases in males. If we sample all the males…

A: Given information: The total number of males born in 2016 in a specific region is N = 200,000. It is…

Q: 2. 10% of all college students volunteer their time. Is the percentage of college students who are…

A: As per our guidelines, we can solve only the first three subparts, Kindly repost the others for…

Q: Most universities and colleges require an SAT score as one of the inputs to an admissions decision.…

A: It is given that the SAT scores for 10 students and their college GPAs.

Q: en reported that 42.6 % of workers employed as purchasing managers are males. In a random sample of…

A: The sample proportion is calculated as: p^=xn=70200=0.35

Q: In the formula for t, the "statistic" is the null hypothesis. the mean of all numbers. the…

A:

Q: The types of raw materials used to construct stone tools found at an archaeological site are shown…

A: We know that the chi-square statistic is given by; where; O = Observed Frequency E = Expected…

Q: much customers buy is a direct result of how much time they spend in the store. A study of average…

A: We have given that  Population mean =8.3 for female Population mean =4.5 for Male  NOTE:- According…

Q: It is thought that 12% of all students taking a particular course received a grade of A. In a sample…

A:

Q: 19% of deaths among male adults can be attributed to heart diseases. Is this percentage different…

A: Solution: It is given that 19% of deaths among male students can be attributed to heart diseases.

Q: Using EXCEL, develop a 95% confidence Interval estimate for the Mean number of miles driven until…

A: 1. The 95% confidence interval is obtained by using the EXCEL(PHStat). The software procedure is…

Q: Interpret the P-value.

A: here given , A store manager claims that 60% of shoppers who enter her store make a purchase. To…

Q: In a test of significance, if all else is held constant, what can be done to increase the power of a…

A: See the solution

Q: steep aphea. live in the inner city have sleep apnea. Of the 317 people from the inner city…

A: An experiment is conducted and the test statistics and p value are given here. g)  The second…

Q: Round to the fourth as needed Requirements (part 1):       Requirements (part 2):       H0H0:…

A: Here one sample proportion test( tow tail z test of proportion )

Q: What is the correct interpretation of Jackson’s z-score?

A: The z-score value is 1.10.

Q: 2. A Suay vиas maae to сотраre tпе costs oj supporing a јатпу Jor a ye In aifferent foreign cities.…

A: Solution: n1=11  Sample size of Toranto n2=11  Sample size of  Mexico ∑x1= 741200x1= ∑x1n1=74120011=…

Q: Can you conclude that the proportion of boys who are overweight differs from the proportion of girls…

A: Here use  proportion test for 2 sample

Q: Recently, a health organization estimated that the flu vaccine was 75​% effective against the…

A: a health organization estimated that the flu vaccine was 75​% effective against the influenza B…

Q: An exam consists of twenty multiple-choice questions. Each question has five different possible…

A: An exam consists of twenty multiple-choice questions. Sample size, n = 20  Each question has five…

Q: If a fair coin is tossed 10 times what is the probabilty that the first five are the same side? Ans.…

A: When a coin is tossed, then there are 2 possible outcomes: Head and tail. So, each outcome can…

Q: According to a report on consumer fraud and identity theft, 26% of all complaints for a year were…

A: In this case, it is needed to check whether the data provide enough evidence to show that Missouri…