The sample mean weight of 65 adult African elephants was measured to be 14,325.62 pounds, with a standard deviation of 872.71 pounds. Using a 10% level of significance, what could we claim about the population mean weight for all African elephants so that the hypothesis will not be rejected?

Q: The physical plant at the main campus of a large state university receives daily requests to replace…

A: We want to find the probability (%) P(49<X<79)= ?  X~N(μ=49,σ2=102)

Q: A tire company claims that its top selling brand averages at least 50,000 miles before it needs to…

A: Given Information: Population mean (u) = 50,000 miles Standard Deviation (s) = 8000 miles Sample…

Q: A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125…

A: Given Information: Population mean (u) = 5.5 pounds Standard Deviation (s) = 1.1 pounds Sample mean…

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Q: it is claimed that personal vehicle is driven 24500 km per year. would you agree with this claim if…

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Q: it is claimed that personal vehicle is driven 24500 km per year. would you agree with this claim if…

A:

Q: According to the Institute of Medicine, the tolerable upper level of sodium intake for adults and…

A: Solution :  Given : μ = 2300 mg             n = 14             x¯ = 2310              s = 38 mg…

Q: The average American consumes 98 liters of alcohol per year. Does the average college student…

A:

Q: the Champlain College pretends that average rent in Lennoxville for a 2 bedrooms apartment is $500.…

A: H0 : ? =500 H1 : ? ≠500 Population mean = ? = 500 Sample S.D = s =10 Sample size = n =41…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation…

A: Solution According to the Empirical rule.

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Q: what is the p-value?

A: Given : n=80 , X-bar=250  , s=70 , μ0=240 , α=0.05 We want to find the p-value.

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

A:

Q: The average pre-school cost for tuition fees last year was P17,250. The following year, 20…

A: Given that  Population mean = 17250 Sample mean = 16150 Sample size (n) = 20  Alpha = 0.10. By using…

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Q: An advocacy group claims that the mean braking distance of a certain type of tire is 75 feet when…

A: According to the provided information,

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation…

A: Given, Mean, mu= 104 Standard deviation, sigma= 17 We know that,  Z score= (X-mu)/sigma

Q: The quality-control manager at a light bulb factory needs to determine whether the mean life of a…

A:

Q: A dean at BUC claims that the average age of the students in this college is 25. A random sample of…

A: Note: Thank you for the question. Since it is not mentioned the standard deviation is population…

Q: Suppose that a manufacturer of laptop batteries claims that his product last more than 950 hours.…

A: Given data : sample size, n = 45 sample mean, x̄ = 925.0 sample standard…

Q: It has been reported that the mean score for a student who takes the certain test is 80 with the…

A: Given mean = 80 standard deviation, σ = 9 sample size, n = 100

Q: When 40 people used Weight Watchers for one year, their mean weight loss was 3.0 lbs and their…

A: The test hypotheses are given below: H0:μ=0 lbsHa:μ>0 lbs From the given information, the…

Q: The sample mean weight of 65 adult African elephants was measured to be 14,325.62 pounds, with a…

A: Solution : Given :  n= 65, X¯ = 14325.62 pounds, σ = 872.71 pounds , α = 0.10 Let us define , H0 : μ…

Q: A trucking company determined that the distance traveled per truck per year is normally​…

A: Solution-: Let, X= The distance traveled per truck per year Given: We find, P[ either less than…

Q: A random sample of 50 public school teachers in Georgia had a mean annual salary of $48,300. Assume…

A: The hypotheses for the test is given below.Null hypothesis:H0: µ = $50,000Alternative hypothesis:H1:…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation…

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Q: If the standard deviation of scores on the MCAT exam is 11.0, how large a sample is needed to…

A: The random variable score follows normal distribution. We have to find the sample size.

Q: A sample of 350 homes for sale in ABC City showed a mean asking price of $247,000, but the city…

A: Introduction: Denote μ as the true mean asking price of homes for sale in ABC City The claim by the…

Q: The manufacturer of a battery claims that the mean life of it is 8 months. An agency took a sample…

A:

Q: A tire producer wants to test whether the mean diameter of the tires produced on a given day equals…

A: Given random sample,n=49 x=36.4 and σ=0.8 inches alpha level =0.05 Here tire producer wants to…

Q: The standard IQ test has a mean of 99, and a standard deviation of 16. We want to be 90% certain…

A: Given data,μ=99σ=16E=5Z-value at 90% Confidence is Zc=1.645n=?

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

A:

Q: A social scientist claims that the average adult watches less than 26 hours of television per week.…

A: The general formula for the test statistic is, z=x¯-μσn

Q: The sample mean weight of 200 adult vulturine parrots was measured to be 734.2 grams, with a…

A: Given  x bar = 734.2s = 15.7n = 20 The 90% CI is given by

Q: A professional rock climber claims that he can climb a particular mountain within half an hour. From…

A: It is given that n=25, x=30.5 and s=3.9 To test  H0:μ=30H1:μ<30

Q: The average salary in this city is $48,800. Is the average less for single people? 57 randomly…

A: To test the given  claim

Q: The combined math and verbal scores for females taking the SAT-I test are normally distributed with…

A: Given that  mean of 998 and a standard deviation of 202 P(x<875 )=?

Q: The sample mean weight of 65 adult African elephants was measured to be 14,325.62 pounds, with a…

A: Answer:-  Option C is the right option.

Q: What can be concluded at the the αα = 0.10 level of significance?

A: Given that  The average American consumes 86 liters of alcohol per year Population mean (μ) = 86…

Q: A hospital president claims that the average Salary of registered nurses at her hospital is more…

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Q: An electrical contractor has concluded that the average home uses at least 500 yards of electrical…

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Q: The mean serum-creatinine level measured in 12 patients 24 hours after they received a newly…

A: State the hypotheses. That is, there is no evidence to conclude that the mean serum-creatinine…

Q: On the Stanford-Binet test, the mean IQ is 100. A class of 21 kindergarten pupils were tested with a…

A: Given  population mean μ=100, n=sample size=21, sample mean x̄=92, sample standard deviations s=6.92…

Q: A sample of 106 body temperatures was found to have a mean of 98.20and a standard deviation of 0.62.…

A: Given that, A sample of 106 body temperatures was found to have a mean of 98.20and a standard…

Q: NebNas manages the credit department for a grocery store chain in the province, and she would like…

A: Given, The null hypothesis, H0:μ=95 The alternative hypothesis, H1:μ≠95 sample size, n=100 sample…

Q: It is claimed that personal vehicle is driven 24500 km per year. Would you agree with this claim if…

A: Given data: Population mean = 24500 Sample size = 100 Sample mean = 28000 Sample standard deviation…

Q: An editor for a large book distributor claims the mean time required to write a textbook is at least…

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Q: A marine biologist claims that a harbor seal's average dive time is at least 5.8 minutes. A random…

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Q: According to an article in Good Housekeeping, a 128-lb woman who walks for 30 minutes four times a…

A: Given, Sample size = 35 Sample mean = 9.1 Sample standard deviation = 5   Set up the null and the…

Q: A survey in San Diego was given and found that the mean commute time in 2014 was 26.5 minutes. A…

A: