A microbiologist wants to estimate the concentration of a certain type of bacterium in a waste-water sample. She puts a 0.5 mL sample of the wastewater on a microscope slide and counts 39 bacteria. Estimate the concentration of bacteria, per mL, in this wastewater, and find the uncertainty in the estimate.

Q: Find the missing measures

A:

Q: Find the raw score which corresponds to z=1.6?

A:

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

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: The quality control engineer at a bottling plant keeps track of the number of bottles that are…

A: Denote p as the true population proportion of overfilled or underfilled bottles.

Q: Six analysts each made six determinations of the paracetamol content of the same batch of tablets.…

A:

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

Q: Nick makes the first quartile salary for an actuary and Dylan makes the first quartile salary for a…

A: From the given box plot:   First quartile for CPA salary= $35,000   First quartile for Actuary…

Q: Is all variation necessarily numerical?

A:

Q: In the year 2020, City A had a population of 200,000. 300 existing cases of colon cancer were…

A: GivenThe population of City A =200000The existing cases of Colon Cancer =300The number of cases…

Q: Helga scored in the 70th percentile rank on an exam. If 300 students took the exam, how many…

A: Given: percentile rank of Helga: 70th           total number of students who took exam: 300 students…

Q: At a birthday party, the menu consisted of burgers, chicken, salad and hotdogs. Approximately 300…

A: Attack rate: The ratio of a population at risk who develops the illness during a defined period of…

Q: An Ectopic Pregnancy is twice as likely to develop when the pregnant women is a smoker as it is when…

A: The aim is to get the percentage of women having ectopic pregnancy are smoker.Let A be the event…

Q: A 60 kg individual needs to work at a MET level of 8 to reach her target heart rate.  If the…

A:

Q: If the pipette is set to dispense 200 microliters, what percentage of time will it dispense greater…

A:

Q: In a sample of 45 men, 27 said that they had less leisure time today than they had 10 years ago. In…

A:

Q: In a class of 50 students, Heather has a rank of 14. At what percentile is she? Heather has a…

A: According to the provided information, B = 14 N = 50

Q: Expressed as Percantage of selling price, which of the best selling menu items is the most costly to…

A: We have to answer question based on given table.

Q: The nightshift workers in 3 of Super Bo’s specialty stores stock about 500 (SD = 12.56) products in…

A: Let μ be the population mean. The hypothesis is, Null hypothesis: H0:μ=496 Alternative hypothesis:…

Q: In an experiment, the temperature of a solution is measured by a student to be 79 degrees, but the…

A: We need to find the percentage error in the measurement. The formula for percentage error is:…

Q: You make four different, indpendent measurements of the resistance of a single 10K resistor and get:…

A: Answer :

Q: The average score in a Science exam was 82 with a SD of 4. The average score on a Math exam was 96…

A: Given : For Science Exam : =82 =4 For Math Exam : =96 =3

Q: What is the uncertainty or Standard Error for this difference in proportions? (F

A: Here For People uses Internet Regularly Sample Size=n1=1754 x1=807 p1^=8071754=0.46 Now For people…

Q: A survey estimated that the average cost of textbooks for a semester of college is $320 with a…

A: Given The average cost of textbook for a semester of college is $320 So x¯ = 320 Margin of error E…

Q: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. How…

A: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. It is…

Q: 4. A farmer estimated that there were 25 gallons of water left in a tank. If this is an…

A:

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

A:

Q: Find the measures.

A: Known fact: A shape polygon with 4 equal sides is called square. Given that WZ=27. That is, side of…

Q: In a sample of 47 men, 36 said that they had less leisure time today than they had 10 years ago. In…

A: We have to perform test for difference in two proportion.

Q: An immunologist is interested in whether the number of symptoms of the flu a person first exhibits…

A: The test is to check whether the number of symptoms of the flu a person first exhibits is related to…

Q: 1. Use the results of the simulation to approximate the margin of error for Javier's estimate of the…

A: Here we have to calculate margin of error Assuming the confidence Interval = 95% Sample Size  = 500…

Q: A biology class performs an experiment com- paring the quantity of food consumed by a certain kind…

A:

Q: Con side that the ten Percent of indlividuals getting tested for the Virus, have the Virus. Now…

A: Let A be the event denoteds the person having virus and B be the event denote the event the person…

Q: In a survey at a local university 52% of students say that they less than the recommended eight…

A: The problem concerns working out the percentages and interpreting .

Q: the brand manager for a toothpaste brand must plan a campaign designed to increase brand…

A: The error is ±1.96×p1-pn=0.05assume p=0.5. This will give the most conservative estimate square on…

Q: In a class of 80 students, Heather has a rank of 16. At what percentile is she? Heather has a…

A: Heather has rank 16 in a class of 80 students. The number of students having rank after Heather is,…

Q: Find the pooled estimate for x1 = 51, x2 = 56, nị 145 and n2 = 146. Round %3D your answer to the…

A:

Q: The Humane Society is interested in finding out how many households in America have at least one…

A: The provided information are: Confidence level = 95% = 0.95 Margin of error (E) = 4% =0.04 From the…

Q: A woman who smokes during pregnancy increases health risks to the infant so that it is nown that…

A: Note , Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: mean: 67.755 standard deviation: 26.871

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…

Q: The Pulmonary Division at your hospital asked that you calculate the percentage of asthmatic adults…

A:

Q: It is bleieved that the percent of convicted felons who have a history of juvenile deliquency is…

A: Solution: State the hypotheses Null hypothesis: That is, the percent of convicted felons who have a…

Q: The proportion, po, of foraging bumblebees not exposed to pesticides who bring very little pollen…

A:

Q: The head of a computer science department is interested in estimating the proportion of students…

A: Solution: From the given information, confidence level is 0.95, p=0.35 and E=0.10.

Q: In California, we need more rain to sustain the health of our natural environment, argriculture, and…

A: Inches of Rain(x) frequency(f) f*x 1 4 4 2 3 6 3 0 0 4 7 28…

Q: A principal of a college wants to estimate the proportion of smokers among his students. What

A: Given : Margin of error, E = 10% = 0.10 Sample proportion = 0.30

Q: It has been reported that the average credit card debt for college seniors at the college book store…

A: Given: Sample size, n = 50 Sample mean,   Standard deviation,

Q: The number of children born in a city during a period was 15,628 and the total population of the…

A: Given problem Given that   The number of children born in a city during a period = 15,628 Total…

Q: A nursing school professor is interested in determining how her college students compare to the…

A: Let X denote the exam score, then assuming that X is normally distributed with mean, µ = 100 and a…

Q: A survey shows that 3 out of 4 of those drink coffee in a town with a population is 7900 adults how…

A:

Q: A recent study in 2013 conducted in Canada showed that house values were reduced in value by an…

A:

Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.