A study of teenage suicide included a sample of 123 girls and 96 boys between ages of 12 and 16 years selected scientifically from admissions records to a private psychiatric hospital. Suicide attempts were reported by 60 of the girls and 18 of the boys. We assume that the girls constitute a simple random sample from a population of similar girls and likewise for the boys.

Q: How smart is your phone? A random sample of 10 samsung Galaxy smartphones being sold over the…

A: The random variable X follows normal distribution. We have to construct the 99.8% confidence…

Q: In a large data set, the 49th percentile is 523 and the 71st percentile is 675.  About what…

A:

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step…

A: The question is about proportion.Given :Randomly selected no. of tankers ( n ) = 432No. of tankers…

Q: A survey of 2390 musicians showed that 304 of them are left-handed. Find a point estimate for p, the…

A: Here Given sample size= n=2390                                         X=304

Q: Karen wants to estimate the mean number of siblings for each student in her school. She records the…

A: Given, Karen records the number of siblings for each of 200 randomly selected students in the…

Q: Suppose a sample of 158158 tankers is drawn. Of these ships, 135135 did not have spills. Using the…

A: It is given that, among 158 tankers 135 did not have spills.

Q: The percentage of girls who like pink in a school is 57%. Which proportion separates the lowest 10%…

A: The percentage of girls who like pink in a school is 57%.p = proportion = 57/100 = 0.57 The sampling…

Q: The mean height of 24 male workers in a factory is 62 inches and the mean of 36 female workers in…

A: Answer: From the given data, Number male workers = 24 = n1 Number of female workers = 36 = n2 Mean…

Q: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

A:

Q: Friday night, the owner of Chez Pierre in downtown Chicago noted the amount spent for dinner for 28…

A: From the above data Count n=28 Mean   Mode : In the given data, the observation 95 occurs maximum…

Q: What is the weighted mean of the numbers 10%, 30%, 60%, 70, 86 and 94

A: The formula of weighted mean is given by…

Q: What percentage of scores would be above 567?

A:

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: The sample size is The number of students reading above the eighth-grade level is . The objective is…

Q: What are the steps for Finding Proportions for One Score?

A:

Q: What is the proportion of the total incidence of CHD in smokers that is attributable to smoking? Use…

A: Given Information: Total no. of participants=4560No. of Total smokers=2249No. of smokers having…

Q: estimate the proportion of tenth graders reading at or below the eighth grade level. Ente

A: It is given thatThe total number of tenth graders =1265The number of students read above the eighth…

Q: The mean score of 8 players in a basketball game was 14.5 points. If the highest individual score is…

A: Given; Mean score of 8 players is 14.5 and mean score of 7 players is 12.

Q: What percentage of students guessed between 41 and 44

A:

Q: accurate way to estimate 24% of 86

A: In this question, the concept of percentage is applied. Percent A part or amount in every hundred is…

Q: Cough and Headache At the 98% confidence level, should be nurse inform the managers that their…

A: The number of sampled patients that complained of cough and headache, n=230.The number of patients…

Q: What percentage of scores are between scores 75 and 89?

A: By emperical rule  P(-1<Z<1)= 0.68 P(-2<Z<2)=0.95 P(-3<Z<3)= 0.

Q: How do i calculate finding the percentage between two z scores?

A: To find the probability between two z-scores: z-score represents the number of standard deviations…

Q: The mean IQ is 100 and the standard deviation is 15. What percentage of people fall between the IQs…

A: given  data, μ=100σ=15we have to find out the percentage of people

Q: . The result of an English exam show a mean score of 55 and a standard deviation of 6. What percent…

A:

Q: company wanted to estimate the proportion of employees who use mass transit to get to work. The…

A:

Q: hich is the most accurate way to estimate 32% of 79

A: To determine which is the most accurate way to estimate 32% of 79.

Q: estimate the proportion of people who were caught after being on the 10 most wanted list enter your…

A: Given : Sample Size, n = 334 Number of successes, x = 86

Q: Greg wants to estimate the percentage of people who lease a car. He surveys 340 individuals and…

A:

Q: Suppose a sample of 830830 Americans over 4141 is drawn. Of these people, 673673 don't smoke. Using…

A:

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: To estimate the proportion of tenth graders reading at or below the eighth grade level, we can use…

Q: Step 1 of 2: Suppose a sample of 1875 floppy disks is drawn. Of these disks, 1594 were not…

A: Let p be the population proportion of defective disks.Given that,Sample size Number of non-defective…

Q: When the Standard Score = -2, what is the percentile of the raw score? O 2nd O 14th 16th 34th 84th

A: Given that, Standard score = -2

Q: Empirical Rule Name Date 500 freshmen at Crescent High School took an algebra test. The scores were…

A:

Q: What percentage of the scores are in the shaded area?

A: It is given that the shaded area in graph.

Q: What is the 84th and 22nd percentile and what is the 7th and 9th decile

A: Solution To find the percentile and decile we will use Excel

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.