A mail order company has 12.5% success rate of having people purchase their products.lt mails advertisements to 676 people and 10% of these people purchase products .What is P?

Q: One pair of students ended up with a significant difference from expected, as their coin tosses…

A: When the sample size is quite large according to central limit theorem the sample will follow a…

Q: A survey of 62 men found that 12 have a social media account. Another survey of 57 women found that…

A: Men are taken as group 1. Women are taken as group 2.   Given: n1=62x1=12n2=57x2=40α=0.07

Q: A marketing researcher measures 100 doctors’ reports of the number of their patients asking them…

A: Use the given information to determine the type of t-test in the given data. From the information,…

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: Of 52 students, it was found that 15 were commuters. If one-quarter of the female students and…

A: Let, x be no of male students y be no of female students Given, x+y=52  -->1 15 were commuters.…

Q: A recent survey of 537 California college students found that 481 had taken an online class in the…

A:

Q: In a study of teen cell phone use, 117 high school students were observed as they drove out of their…

A: Solution Given out of 117 students drive their vehicles to school and 46 were taking on their…

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: invested in bonds. For a = .10, does the test show enough evidence to declare that the proportion of…

A: Given: Sample size, n = 215 x = 91 Population proportion, p = 0.57  significance level

Q: A recent survey found that 68.6% ofthe population own their homes. In a random sample of180 heads of…

A:

Q: A grocery store has determined that in crates of tomatoes, 95% carry no rotten tomatoes, 2% carry…

A: Given: The probability that crates carry no rotten tomatoes is 0.95. The probability that crates…

Q: General Motors wants to know if a newly designed car has a different appeal to people under 30…

A:

Q: The median yearly salary for a police dispatcher in a large city was $44,528. If the 25th percentile…

A: a. The median yearly salary for a police dispatcher in a large city was $44528.

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: i) Test, at the 3% level of significance, whether the proportion of adults who experience an adverse…

A: For sample 1, we have that the sample size is N1= 733 the number of favourable cases is X1= 103, so…

Q: In a village actually invaded by anthrax, 65% of the gouts were attacked and 90% have been…

A:

Q: Is there a difference in greater percentage of popped kernels using name-brand microwave popcorn…

A: Assume that the percentages of popped kernels for Name-brand and that for Store-brand are…

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

A: From the provided information, The degree of freedom for treatment (k – 1) = 3 A) The required…

Q: A recent study of young executives showed that 30 percent run, 20 percent bike and 12 percent do…

A: Note: Hi there! Thank you for posting the questions. As there are several independent questions,…

Q: If in a village actually involved by anthrax, 70 per cent of the goats are attacked and pei cent…

A:

Q: Travis took the ACT (μ=19.50,σ=7) and recieved a percentile of 67. What was his z score? What was…

A: you had not provided distribution of sat score so we can not find answer of c.

Q: About 7% of males are colorblind. Hoping to find many colorblind men for her study, a researcher…

A: It is given that p =0.07 and n = 433.

Q: An opaque jar contains 300 marbles, all either green or purple. Calista pulls out 10 marbles without…

A: # Given: no of marble in jar N=300  Sample of size n=10 drawn  No of purple marble in sample =2…

Q: An agriculturalist on a farm conducted a study to investigate whether ladybugs are effective in…

A: Number of pairs of trees selected with a positive difference in number of damaged avocado fruit is…

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: To calculate the number defective bulbs in the batch of 3000 light bulbs. A sample contains 125…

Q: In an exit poll of 625 scientifically and randomly selected voters, 340 expressed support for…

A: Given data, n=625 x=340 sample proportion(p)=?

Q: The sales force at a certain company successfully closed 92 out of 200 sales calls. What was their…

A:

Q: A survey is conducted on the use of Facebook of adults in the United States, where 12,000 adults are…

A: Population of a survey means the entire group on which we are taking survey. Sample is a specific…

Q: a study is conducted to access the impact of caffeine consumption, smoking, alcohol consumption, and…

A: Given data, p=40%=0.4 n=8 Let X be event that they consume caffiene and smoke. P(X<=6)=?

Q: A study of 156 oak trees found that 8.5% had a bark beetle infestation. Find a 95%…

A:

Q: A software company is interested in improving customer satisfaction rate from the 55% currently…

A: From the given information, The population proportion is, p=55%=0.55 The company sponsored a survey…

Q: In a recent election, 54% of all registered voters participated in voting. In a survey of 350…

A: Writing the sample population as a percentage i.e. 217 of 350:

Q: A cafeteria manager surveyed a random sample of students at a school to determine which of 2 meal…

A:

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: Given infromation:A sample of 125 light bulbs contained 3 defective…

Q: The executives at Sandbachian, Inc., has recently solved their widget crisis, have another problem…

A:

Q: A Chinese cell-phone manufacturer exclusively uses robots in one of its factories. A random test run…

A:

Q: What is the 87.7 percentile of X~N(12,3)

A: Answer: Given that, X~N(12,3)

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: We have to test the claim that "the proportion of adults in Country C who favor building new nuclear…

Q: In the upcoming election for governor, the most recent poll, based on 900 respondents, predicts that…

A: From the given information, In the upcoming election for governor, the most recent poll, based on…

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

A: The degrees of freedoms are 2 and 36.

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A: State the hypotheses.

Q: How many independent variables entered in the overall model and was/were not able to enter? What is…

A: We have given that the summary data in table form of the model.

Q: In a series of houses actually invaded by smallpox, 70% of the inhabitants are attacked and 85% have…

A: Suppose A & B be two events. Then we know, (A∪B)=(A)+(B)-(A∩B). Consider from the problem that,…

Q: many males are in the sample?

A: A survey of 500 people is shown in a tree diagram M-male F-female E-eat breakfast D-does do not eat…

Q: How would you conduct a sample of people in your community so that you could see which flavors are…

A: Suppose that you want to know which flavors of ice-cream from among chocolate, vanilla, mango and…

Q: USA Today posted this question on the electronic version of its newspaper: “Should guys pay for…

A: An experiment deliberately imposes some treatment on individuals in order to observe their…

Q: In a survey of 1150 adult males, 805 said they use the Internet. In a survey of 1050females, 746…

A: From the provided information,

Q: Rose randomly surveyed 50 students and found that 15 had a part-time job. If there are 750 students…

A:

Q: In a survey of a sample of 1050 teenagers, 17% said they like to watch soccer.

A: Given that  In a survey of a sample of 1050 teenagers , 17% said that they like to watch soccer.…

Q: Of the 1,000 total calls, 51 did not result in a satisfactory outcome. Thus, the proportion of calls…

A: Of the 1000 calls 51 didn't result satisfactory outcome. Hence total number of unsatisfactory…

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.