1 in a simple random sanpling if 50 people, find the prob that less than 38  perrcent of our sample aRE AFRAID OF  dogs. 2 in a simple random sanpling if 250 people, find the prob that less than 38  perrcent of our sample aRE AFRAID OF  dogs. 3 the difference betweenQ 1 and Q2 shows which law

Q: A car enthusiast wants to determine if his car indeed travel 640 km on  a full tank of a particular…

A:

Q: reat corona.a doctor treated 10 cases of corona in 2019 find the prob that 1  or more out of the 10…

A: Given: p = 38% = 0.38 n =10 The binomial formula is: The prob that 1  or more out of the 10 were…

Q: A study found that 80% of teenagers use social media on a regular basis. John wants to investigate…

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Q: 4. A drug company creates a medicine designed to prevent colds, and states that it is equally…

A: The type of hypothesis test is Hypothesis test for two independent proportions The test is two…

Q: In the survey of 60 people it was found that, 25 read Sunstar 26 read Manila times 26 read manila…

A: Concept: Venn diagram: A Venn diagram illustrates the conceptual relationship between two different…

Q: It is claimed that the proportion of men who want football matches to be broadcast more frequently…

A: Provided information is ;                      Null hypothesis : H0 :  P1 = P2 versus Alternative…

Q: At pandemic time of COVID 19 surveys are conducted in two townships which fall into the same Lusaka…

A: Given: No. of positive tested people in Chawama, x1 =175 Sample size, n1=318 No. of positive tested…

Q: If all the possible random samples of n=81 scores are selected from a normal population with u=80…

A:

Q: A breathalyser test is used by police in an area to determine whether a driver has an excess of…

A: Given 6 % of drivers Haven't consumed alcohol 10%of drivers above the legal limit

Q: hypothetical population has two alleles for a gene: A and a. In a random sample of 100 individuals,…

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Q: A manufacturer claims that fewer than 6% of its fax machines are defective. In a random sample of 97…

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Q: a certain test for a particular cancer is known to be 95% accurate. a person submits to the test an…

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Q: 1. In a survey 7 out of 8 dentists recommend a ProTooth toothbrush. Based on this information, which…

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Q: According to a recent marketing campaign, 90 drinkers of either Diet Coke or Diet Pepsi participated…

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Q: A humane society claims that less than 67% of US households own a pet. In a random sample of 600 U.S…

A: Given,   The sample proportion is,

Q: The components of a 6-component system are to be randomly chosen from a bin of 25 used components.…

A: Given data The components of a 6 component system are to be randomly chosen from a bin of 25 used…

Q: A cigarette manufacturing firm claims its brand A of the cigarettes outsells its brand B by 8%.if…

A:

Q: A medical researcher says that less than 25​% of adults in a certain country are smokers. In a…

A: Given information Total no of adults = 250

Q: Even though you have no symptoms, your doctor withes to test you for a rare disease that only 1 in…

A: From the given information, P(positive| having disease)=98%. P(negative| having disease)=2%…

Q: A research center claims that 26% of adults in a certain country would travel into space on a…

A:

Q: A chi-square independence test is to be conducted to decide whether an association exists between…

A: From the provided information, Chi-square independence test is to be conducted to decide whether an…

Q: 1. If two brown mice are bred together, 35 of their 100 offspring are white. You hypothesize that…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: A poll conducted for Newsweek found that 13% of Americans have seen or sensed the presence of an…

A: Given that A poll conducted for Newsweek found that 13% of Americans have seen or sensed the…

Q: A local chess club claims that the length of time to play a game has a mean of 12 minutes or more.…

A: The hypothesis is given by: H0:t≥12;Ha:t<12 Therefore a type 1 error means false positive and…

Q: A smartphone manufacturer admits that 12% of the smartphones they make have defects that could…

A: 1. Given that X=the number of smartphones manufactured by this company that have defects that could…

Q: In a cancer study, 10 mice of strain A and 15 of strain B were treated. Each 0 of developing cancer,…

A:

Q: nts traveling overseas, 47% were women and 53% were men. A random sample of 500 travelers on a large…

A: The null and alternative hypothesis for the proportion of females can be written as: Ho:p=0.47…

Q: A researcher claims that 60 individuals is the average number of persons took Pfizer corona vaccine…

A: We have to find correct  null and alternative hypothesis..

Q: An education researcher claims that at most 4% of working college students are employed as teachers…

A: Here one proportion Z test is applicable , Where , n = 400 given

Q: According to the Pew Research Center, 19% of U.S.adults living in Rural areas of the country do not…

A:

Q: A manufacturer produces boxes of candy, each containing 10 pieces. Two machines are used for this…

A: There are two machines Define the Events, A : The machine is faulty  B : The the product contains no…

Q: A corrections officer read that 58% of runaways are female. He believes that the percentage is…

A: The null hypothesis for testing significance of difference between sample proportion (p) and…

Q: A breathalyser test is used by police in an area to determine whether a driver has an excess of…

A: The conditional probability of happening of event A when event B already happened, can be expressed…

Q: An entomologist rights an article in a scientific journal which claims that fewer than 17 in 10,000…

A:

Q: Suppose that 73.2% of all adults with type 2 diabetes also suffer from hypertension. After…

A: From the provided information, Sample size (n) = 1000 Out of which 718 suffered from hypertension…

Q: A gray mouse has a 20% chance of stealing cheese from a mousetrap without getting caught, while a…

A: Given information: Given that the gray mouse has a 20% chance of stealing cheese from a mousetrap…

Q: company that manufactures a low-calorie dairy drink wants to determine whether there is preference…

A: From the given information we find the probability.

Q: A medical researcher says that 25% of U.S. adults are smokers. In a random sample of 272 US. adults,…

A:

Q: If the odds of catching the flu among individuals who take vitamin C is 0.0342 and the odds of…

A: The probability of an individual catching the flu when he or she has taken Vitamin C is:  PF |…

Q: an automobile engineer claims that 1in 10 automobile accidents are due to driver fatigue . if a…

A: Given: P(Accidents are due to driver fatigue)=p=110=0.10Number of accidents observed =n=5

Q: A student pursuing a degree in English as a second language believes the proportion female factory…

A: Given Information: Female: Sample size (n) = 313 Number of female factory workers who could not…

Q: Suppose that 3000 drivers in Wakanda were randomly breath-tested on 21 April 2019 and 116 were above…

A: Suppose that 3000 drivers in Wakanda were randomly breath-tested on 21 April 2019 and 116 were above…

Q: A medical researcher says that less than 72% of adults in a certain country think that healthy…

A: In this case, the claim is that less than 72% of adults think that children should be required to be…

Q: Suppose that there are 4 deaths due to stomach can- cer among workers in a tire plant from 1/1/64 to…

A: n=1000 P=0.0025 Confidence interval=95%

Q: A health psychologist claims that the more final exams a student has during finals weeks, the more…

A: We need to compute the mean difference for the given data.

Q: Covid-19 test on a population of 500 people was conducted and observed the following details: 75…

A: Given that, 75 people developed symptom A, 63 people developed symptom B, 65 people developed…

Q: If a study determines the difference in average salary for subpopulations of people with blue eyes…

A: It is given that if a study determines the difference in average salary for subpopulations of people…

Q: Express the null hypothesis Ho and the olternative hypothesis Ho in notation form in the following…

A:

Q: A random sample of 16 statistics examinations from a large population was taken. If5 students scored…

A: Here use z test of proportion

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.