gigantic warehouse stores approximately 80 million empty aluminum beer and soda cans.​ Recently, a fire occurred at the warehouse. The smoke from the fire contaminated many of the cans with​ blackspot, rendering them unusable. A statistician was hired by the insurance company to estimate​ p, the true proportion of cans in the warehouse that were contaminated by the fire. How many aluminum cans should be randomly sampled to estimate p to within 0.02 with 95​% ​confidence? The statistician should sample (FILL IN THIS BLANK) cans to estimate the proportion that were contaminated by the fire to within 0.02

Q: esearch scientist wishes to test the claim that the mean number of units taken by community college…

A: From the given information, We see that no information about the normality of the population is…

Q: An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair…

A:

Q: The local aquarium houses sharks of various species. At the aquarium, Manolo is an adult male shark…

A: GivenManolo is an adult male shark withMean(μ)=2.67standard deviation(σ)=0.29lenght(x)=3.1Emma is an…

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: The time married men with children spend on child care averages  hours per week. You belong to a…

A: (a) Null and Alternative Hypotheses:The following null and alternative hypotheses need to be…

Q: expected number of students who read the book online.

A: Students purchased hard copy =P(H) = 60% =0.60 Students print out from the web =P(W)= 25% = 0.25…

Q: Professors collected data consisting of eye color and gender of statistics students. Among 950 male​…

A: Given that, For males:  X1= 372 and sample size n1= 950  p1^ = X1/n1 = 372/950 =0.3916 For females:…

Q: Most adults would erase all of their personal information online if they could. A software firm…

A:

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

A: Explanation:Here, estimate the mean number of siblings for each student in Angela school. Moreover,…

Q: You have a dataset with a mean of 2, median of 3 and variance of 9.  What is the skewness?

A: Given that  Mean = 2 , Median = 3 , Variance = 9

Q: An advertising agency has stated that 20% of all television viewers watch a particular program. How…

A: From the provided information, An advertising agency has stated that 20% of all television viewers…

Q: Between what two values of Z (symmetrically distributed around the mean) will 95.44% of all possible…

A:

Q: ce interval does not cc lent that the mean am chan the mean amoun

A: Let Population 1 be people who exercise in the morning and Population 2 be people who exercise in…

Q: A gym class is taking a fitness test. The gym teacher is recording how many sit-ups the participants…

A:

Q: The Coca-Cola Company reported that the mean per capita annual sales of its beverages in the United…

A: Mean(x)=460.4 standard deviation(s)=101.9 sample size(n)=36

Q: A data set has size of 40. How many observations lie within two standard deviations of either sides…

A: The 68-95-99.7% (Empirical) Rule: For a normal distribution, the empirical rule (68-95-99.7% Rule)…

Q: Would it be unusual for the sample mean to be less than 2 ?

A: Would it be unusual for the sample mean to be less than 2 ?

Q: In 2009, it was estimated that 63% of Americans supported the death penalty. In 2014, a Rasmussen…

A: sample size(n)=943 No. of Americans supported the death penalty(x)=536 population proportion=0.63

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given, n=119, x=31, α=0.05 Then, p^=31119=0.260504

Q: A police officer waits on a road to catch speeding cars. In a one hour sample, the officer find that…

A:

Q: Is there a difference in the mean satisfaction level among the four airlines? Use the .05…

A: The following table is obtained:   Group 1 = Air Waves Group 2 = Belle Air Group 3 = Cirrus…

Q: The time married men with children spend on child care averages  6.9 hours per week. You belong to a…

A: From the provided information,The time married men with children spend on child care averages  6.9…

Q: Lake Martin and Lake Fields are two large local lakes inhabited by white sturgeon. A while back…

A: Step 1: Identify the hypotheses The null hypothesis should be that the mean weight of the sturgeons…

Q: A candy manufacturer has replaced 5.17% of their chocolate bars with a new mystery flavor. Find the…

A: Given: Sample size (n) = 424 p(chocolate bars with a new mystery flavor) = 5.17% = 0.0517

Q: student scored in the 75th percentile on the SAT. What does that mean?

A:

Q: Two classes write the same test. Class 1 (n=32) has a mean number of points of 720 (M=720, s=20) and…

A: We have given two classes write the same test.For class 1-Sample size n1 = 32Mean M1 = 720Sample…

Q: The Canine Gourmet Company produces delicious dog treats for canines with discriminating tastes.…

A: From the given information, Process average weight per packet is 41 grams. That is, x¯¯=41 The…

Q: Erica has a swimming pool at her house. Once a year she purchases a 50-pound bucket of chlorine…

A: Given information- Null Hypothesis, H0: μ = 50 pounds Alternate Hypothesis, Ha: μ < 50 pounds…

Q: Imagine a researcher wants to determine whether the participants in his sample are skewed toward…

A: Introduction: When the mean of one group is to be compared to a fixed value, or the means of two…

Q: A professor using an open-source introductory statistics book predicts that 60% of the students will…

A: given data, 60% - student will purchase a hard copy of the book,25%- will print it out from the…

Q: The time married men with children spend on child care averages 6.8 hours per week. You belong to a…

A: Solution: Given information: n= 40 Sample size  μ= 6.8 Population mean ∑x = 292.4x = ∑xn=292.440=…

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

A:

Q: The scores of a random sample of 8 students on a physics test are as follows: 60, 62, 67, 69, 70,…

A:

Q: In the US, 45.1% of all people have type O blood, 39.6% have type A blood, 10.9% have type B blood…

A: H0: The distributions of blood types are the same between the general population and the…

Q: The number of hours per week that the television is turned on is determined for each family in a…

A: Given that there are 24 families in the sample.  Mean=31 Median=27.2 7th percentile= 16 hours

Q: A school district decided to measure the BMI of all 3rd graders and identify the highest 1% and…

A:

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.