Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th percentile of wait times.

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: determine the effectiveness of their recent advertising campaign. Researchers at the agency surveyed…

A: The scenario is that the marketing agency wants to determine the effectiveness of their recent…

Q: A survey of 78 men found that 10 have a social media account. Another survey of 51 women found that…

A: Given Information: Women: Sample size (n1) = 51 Out of which X1 = 26 have a social media account.…

Q: Police Department A and Department B each use the same set of data about the number of safety…

A: Given that  Department A calculates an interval of 12% to 15%, Department B calculates an interval…

Q: A polling agency claims that over 40% of adults shop for a gift within a week of an event.  In a…

A: We have given that p = 40% = 0.40  n = 2730x = 1130p̂ = x/n = 1130/2370 = 0.4139Significance level…

Q: Define the test variable?

A: Introduction A variable is a characteristic that is being tested.

Q: A medical clinic uses a pregnancy test to confirm pregnancy in patients who suspect they are…

A: Given Information:

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Q: employees in a company was k2,400,000. The mean yearly salaries paid to male and female employees…

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Q: ABC University kept insisting that they performed better than DEF University in last year’s National…

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Q: A statistics professor administered an exam to three different classes. The 8:00class had 20…

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A: Hi! Thank you for the question, as per the honour code, we are allowed to answer three sub-parts at…

Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: A high school guidance counselor analyzed data from a sample of 200 community colleges throughout…

A: Population: Population consists of the complete set of subjects that are included in the study for…

Q: What is Multiple Comparisons?

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A: The outdoor hot dog vendor sells an average of 60 hot dogs per day in dry weather and an average of…

Q: Of the 328 patients that completed the survey last year, 211 of them claimed to be returning…

A: Given: 328 patients completed the survey 211 patients returning

Q: The number of students taking the Scholastic Aptitude Test (SAT) has risen to an all-time high of…

A: The number of times the SAT was taken and the number of students are as follows.     Number of…

Q: The last Harry Potter book went on sale at 12:01 a.m. on July 21, 2007. The publisher Scholastic…

A: The portion of a number can be evaluated by multiplying the fraction of the portion required to the…

Q: Michelle's Mega Muffins recently sold 6 muffins, of which 3 were poppy seed muffins. Considering…

A: Given that, Michelle's Mega Muffins sold 6 muffins, of which 3 were poppy seed muffins. To find how…

Q: What is the variance and standard deviation for the number of times the SAT is taken?

A: We want to variance and standard deviation

Q: How do you determine which exam score is higher relative to others

A: The normal distribution is a continuous distribution.

Q: The Institute of Education Sciences measures the high school dropout rate as the percentage of…

A: Given:n =  1000Population Proportion, p = 8.1% = 0.081Significance level, α = 5% = 0.05

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A:

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Q: What is the probability that a student takes the SAT more than one time? Q-2  Refer to the data…

A: From given table, Total = 721769+601325+166736+22299+6730 = 1,518,859

Q: On a test, John scored at the 50th percentile and Jim scored at the 25th percentile; therefore,…

A: A percentile indicates a score's position in relation to those other values from the same dataset.…

Q: The market share analysis company, Net Applications, monitors and reports on the use of the Internet…

A:

Q: Describe about THREE F TESTS.

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A: Given, Salary workers mean fatal injuries = 4600 Self-employed mean fatal injuries = 1044

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.