The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152 pounds and the standard deviation is 84 pounds. In order to validate this claim, an investigative organization took a random sample of 30 yearlings and measured their weight. The data are displayed in the histogram What is the shape of this distribution? Visually estimate the center of this Visually estimate the number of yearlings in this sample that weigh less than 1100 Do you agree with the Virginia Cooperative Extension’s assertion that the mean weight of steers is 1152 pounds? Explain your response.

Q: lue Hill and Arroyo Seco are schools in different states. Laura is a student at Blue Hill and is 58…

A: X=Laura's Y= Lisa's

Q: The election results were announced in a country. The number of seats in state Mozi had a mean of…

A:

Q: Imagine that every elementary school in California is measured on several characteristics and then…

A:

Q: c. Find the p-value. Round to 4 decimals. p-value = d. Make a decision. O Fail to reject the null…

A: Given : Mean : x1 = 46.9x2 = 36.2 standard deviation : σ1 = 12.4σ2 = 15.3 Sample size : n1 = 124n2 =…

Q: Define range, interquartile range, variance and standard deviation.

A: Range: The range is the difference between the maximum value and the minimum value. Range = maximum…

Q: Imagine that every elementary school in California is measured on several characteristics and then…

A: For Carver:mean(μ)=10.1standard deviation(σ)=2.3and score (X)=13.2For Bryant:mean(μ)=9.8standard…

Q: 7. A statistical study of elves results in finding a mean height of 38.5 inches with a standard…

A:

Q: Marine biologist at Nova Southeastern University spent three months on a research expedition tagging…

A: The given information is: For females,  Sample sizen1=142 Sample meanx¯1=68.3 Sample standard…

Q: The sample standard deviation is one measure that describes the value in the sample that the data…

A: A single number that seeks to represent a set of data by identifying the center position within that…

Q: In the 2014 MLB season the Los Angeles Dodgers won 94 games and lost 68 to finish in first place in…

A: We have to sketch a normal distribution curve.

Q: What is the standard deviation of the data set 14,23,9,12,21,18,8

A:

Q: According to a leasing firm's reports, the mean number of miles driven annually in its leased cars…

A: Mean()=12107standard deviation()=2640sample size(n)=90significance level()=0.01

Q: A survey found that women's heights are normally distributed with mean 63.8 in and standard…

A:

Q: The daily rates of a sample of eight employee at POL Corp. are $550, $420, $560, $500, $700, $670,…

A:

Q: An economist would like to estimate the mean amount of money that a family spends to within $45. If…

A: GivenMargin of Error(E)-45standard deviation(σ)=190α=1-0.93=0.07α2=0.035zα2=1.8119      (from z…

Q: When Sandy made landfall in October of 2012, it became the second most costly hurricane in the US.…

A: We have given that the random variable X i.e. rainfall is normally distributed with mean 7.3 inches…

Q: Chris tested a sample of 20 Brand A electronic engine control modules, and they lasted 48,560…

A: The sample mean and standard deviation for Brand A electronic engine control modules is;…

Q: Rick operates a concession stand serving Iced Tea at the Los Angeles County Fair.  Ben is the only…

A:

Q: The honors program at Brads University only except students with an entrance score exam over 400.…

A:

Q: year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges…

A: Solution: Given information: n1= 35  Sample size of four year college students n2=35  Sample size of…

Q: According to the Bureau of Labor Statistics, the mean salary for registered nurses in Kentucky was…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: Achalasia is a rare disease that causes serious digestive distress to patients. Specialists perform…

A: Test is that whether the operation causes higher blood pressure than the common belief. Given that…

Q: The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was…

A: According to the given information in this question, we need to find the following probability

Q: The Bureau of the Census provides figure on the average annual income of all Pakistan households in…

A: Given that The mean household income in 2015 = $32,144. The median household income in 2015 =…

Q: According to a human modeling project, the distribution of foot lengths of 16- to 17-year-old boys…

A: given data normal distributionμ  = 25.4σ = 1.2

Q: Woodland and Clear Beach are schools in different states, Alan is a student at Woodland and is 56…

A: a) Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: What is the equation for The standard deviation of the distribution of sample proportions

A: Let p be the population proportion of successes.

Q: A nutritionist conducted a study on the eating patterns of early adolescent boys and girls. Calorie…

A: GivenFor boysThe mean calories per day =3300standard deviation =790 For girlsThe mean calories per…

Q: person would need to be in each of the following top percentages. (a) 3% (b) 9%

A: It is given that  Mean, μ = 100 Standard deviation, σ = 11

Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

A:

Q: Joan’s fishing time for the bolder boulder 10k race was 1.63 standard deviations faster than the…

A: In this case, the z-score indicates the standardized difference between Joan's finishing time from…

Q: Imagine that every elementary school in California is measured on several characteristics and then…

A: From the provided information, Mean (µ) and standard deviation (σ) of the school in Los Angeles…

Q: The shape of the distribution of the time required to get an oil change at a 20-minute oil-change…

A:

Q: According to a report by the U.S. Fish and Wildlife Service, the mean length of six-year-old rainbow…

A: As per Bartleby guideline expert have to answer first question only dear student please upload other…

Q: A Statistics instructor wanted to compare the scores on the same final exam given to students at a…

A: We have given that  Sample sizes n1= 36 , n2= 45 ,xbar1=84 ,xbar2= 79 , s1= 3.4 ,s2=2.6  Confidence…

Q: Who has the larger dog relative to their breed?

A: It is given that For Golden Retriever, X = 70.2, mean = 67 and SD = 2.5 For St Bernard, X = 215,…

Q: The last class of data to be examined is grouped data vs. ungrouped data. Differentiate between the…

A: 13,15,19, 21, 12,18,16,15,17

Q: The latest available data showed health care spending were $8086 per person in the United States…

A: Givenpopulation mean = $8086population standard deviation = $2500sample size = 100Health care…

Q: The U.S. Energy Information Administration (US EIA) reported that the average price for a liter of…

A: we have given that  xbar =0.78  , sigma =0.06  and 95 % confidence .   margin of error = Zc…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 65…

A:

Q: The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one…

A: In this intriguing analysis centered around traffic speeds near Johnson City High School, the…

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: A group of 894 women aged 70 – 79 had their height and weight measured. The mean height was 159 cm…

A: We have given that  X~N( μ , ?^2 )   Z-score =( x - μ )/?