Wildlife biologist inspects 153 deer taken by hunters and find 32 of them carrying Lyme disease ticks. 1). If the scientist want to estimate the proportion of the deer that carry Lyme disease ticks within 2% with 90% confidence how many deer should they sample?

Q: A researcher wants to estimate the impact prenatal care during pregnancy can have on anemia rates in…

A: It is given that the population proportion (prevalence) is 0.397. It is known that the critical…

Q: Suppose 4 percent of the children in the US are thought to be near the juvenile diabetes threshold.…

A:

Q: The executives at Sandbachian, inc., having recently solved their widget crisis, have another…

A: Let ‘x’ be the no of defective manhole covers i.e x=40 and n=800 sample propotion (P)=x/n p=40/800…

Q: The International Brotherhood of Slide Whistlers wants to conduct a survey to find what proportion…

A: Let COnfidence interval be 90% Zc=1.645 E=3%=0.03 p=0.5 n=?

Q: You are running a political campaign and wish to estimate, with 95% confidence, the proportion of…

A: Formula for the sample size needed to estimate a population proportion is

Q: Anna is 3 years old and in the 42nd percentile for height in her age group. What does this mean?…

A: Given: 1)Anna is 3 years old and, 2) In the 42nd percentile for height in her age group. In the…

Q: Americans who believe the government should ensure basic health care is _________% with a margin of…

A:

Q: 3. A political scientist would like to estimate the proportion of voters who read their ballot…

A: To calculate: How large of a sample size does she need?

Q: 462 subjects were studied and 99 of them expressed a preference for Brand what percentage expressed…

A: From the provided information, Total subjects = 462 Out of which 99 expressed a preference for Brand…

Q: A recent survey found that 58% of U.S. adults use their smartphones to research and shop for…

A: The expression is  The margin of error is given as 5.3%.

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

A: From the provided data we have, Degrees of freedom between group = k-1 = 2  Thus, k = 3 Degrees of…

Q: A poll of 80 students selected at random at Midtown University found that 20 were in favor of a fee…

A: Given  Total student in sample = 80 students No. of student in favour of feet hike = 20 students

Q: Say that there are five populations, and we need to test for difference of population means.  If we…

A: Say that there are five populations, and we need to test for difference of population means. We test…

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: :5. If in a village actually involved by anthrax, 70 per cent of the goats are attacked and 85 pet…

A:

Q: In a comparison taste test of two juice drink 780 people preferred Cranberry Blast.Only 220 people…

A: In a comparison taste test of two juice drink 780 people preferred Cranberry Blast.Only 220 people…

Q: A Plitical pollster wants to know what proportion of voters think james burger should go away and…

A:

Q: Male penguins that weigh more than 4710 grams are considered "desirable" because the extra fat means…

A: We need to find expected value of desirable penguins Let us find out probability of a desirable…

Q: Kai'Sa is doing her best to maintain her figure by following a strict calorie counting process.…

A: Given data Hypothesized mean µ= 370 Sample mean = 383 Sample Standard deviation s = 70 n = 60…

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: In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism…

A:

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96, p=0.54 and E=0.02.

Q: There are 1,000 students in a college. Out of 20,000 in the whole university, in a study 200 were…

A:

Q: 3. A Gallup poll conducted in 2010 found that 494 of 1050 adult Americans believe it is the…

A: Given that  Sample size n =1050 Favorable cases x =494 Sample proportion p^=x/n  =494/1050 =0.4705

Q: In the study conducted by selecting 100 female and 100 male students in order to test the claim that…

A: given that  p- value=0.0228

Q: A survey asks: Which online services have you used in the last month: - Twitter Facebook - Have used…

A:

Q: (a)  Do you think that the percentage of all American movie-goers who think the popcorn is…

A: Given that 12% of a random sample of 25 American movie-goers thought the popcorn sold at the movie…

Q: 4. Ms. Ellis expected 50 families to attend parent-teacher conferences, but 60 families attended.…

A: To calculate the percentage error

Q: The US population is 13% African American.  If you were to take a SRS of 500 Americans, above what…

A: Solution:From the given information, the proportion of African American is 0.13, random sample of…

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

A:

Q: A sobriety test is 96% accurate. Suppose 2500 drivers were pulled over on suspicion ofintoxication,…

A: Given that the sobriety test is 96% accurate, 2500 drivers were pulled over on suspicion of…

Q: A random sample of 144 residents in a community produced 88 residents testing positive for the…

A: Null Hypothesis: H0:p=0.5 Alternative Hypothesis: H1:p≠0.5 Given information:…

Q: A group of researchers want to investigate the academic performance of the college students in…

A: Given that, N = 12000 Margin of error (e) = 0.05 The formula for calculating the sample size is,

Q: A pollster wishes to estimate the true proportion of US voters who oppose capital punishment. How…

A: Given information Error = 3.5% = 0.035 Confidence level = 0.90

Q: 1. How many samples must be considered from a population of 28,000 students, if 5% margin of error…

A:

Q: A mother bought 4 pieces, namely, apples, mangoes, oranges, and strobey with a proportion of 25%,…

A: Conditional Probability: Let A and B be two events with P(A) > 0. Then the conditional…

Q: 4. A survey shows 47% of movie goers are males. A test is conducted to see if the proportion is…

A: Solution : Null Hypothesis : The hypothesis to be tested is is called as null hypothesis. Generally…

Q: In the population, the mean SAT score is 1000. Would you be more likely (or equally likely) to get a…

A: Given that the population mean is 1,000 and the samples sizes selected are 10 and 30.

Q: A poll is conducted and shows that 46% of homes have a landline, with a margin of error of 3%. a.…

A: Given that a poll is conducted and shows that 46% of homes have a landline with a margin of error of…

Q: 2 Considering the 5800 enrollees in the College of Education, a researcher would like to make a…

A:

Q: A union’s executive conducted a survey of its members to determine what the members felt the…

A: Given that: Proportion of members who felt job security was an important issue:  PJob security=0.74…

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: mple is rder to be 99% confident that the sample proportion will not differ from the true proportion…

A: Given : Margin of error: ME = 0.06 sample proportion: p̂ = 0.23

Q: The US population is 13% African American.  If you were to take a SRS of 500 Americans, below what…

A: From the given data The US population is 13% African American

Q: In a Gallup poll of 1236 adult respondents, 6% said that bad luck follows breaking a mirror. That…

A: The margin of error expresses the amount of the random variation underlying a survey's results

Q: if the 90% Ci for the population mean is (-4.58, 6.54) what is the sample mean O a. can't be found

A: Given data,Lower limit =-4.58Upper limit =6.54Sample mean =?

Q: A manager for Shopee wants to determine the current percentage of Filipino adults who now use the…

A: The Cochran formula is used to determine the minimum sample size for the estimation of population…

Q: A researcher plan to conduct a survey about how capable the students are in conducting research. If…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: A pollster wishes to estimate the proportion of United States voters who favor capital punishment.…

A: Given that, Critical value: Using the z-table, the critical value at 90% confidence level is

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.