A fish hatchery manager estimates that on average fisherpersons catch 3.5 fish each fishing trip. A random sample of 10 fisherpersons showed they caught 3.9 fish per trip, with a standard deviation of 1.7 fish per trip. Perform a test of hypothesis at a 0 .10 alpha level to determine whether or not her claim is true. Use a two tailed test of hypothesis and the critical value method.

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Q: A simple random sample of 29 filtered​ 100-mm cigarettes is obtained from a normally distributed​…

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Q: A brewery distributes beer in bottles labeled 32oz. The local Consumer Association randomly selects…

A: Given  Population mean μ=32, sample mean x̄=31, n=sample size=30, population standard…

Q: The piston diameter of a certain hand pump is 0.7 inch. The manager determines that the diameters…

A:

Q: In the past, a company used to produce 40 tons of a certain food per day on average. Now, using a…

A: Given: n= 25.0 ,x̄= 45.0 ,s= 5.0 µ= 40.0

Q: A sociologist will conduct a two-sample t-test for a difference in means to investigate whether…

A: n1=32                                 n2=28x1 =55000                         x2 =58000S1=3500…

Q: A researcher found that a cigarette smoker smokes on average 30 cigarettes a day. She feels that…

A: Given  n=11, mu=30, X1bar=31, s=2.5, alpha=0.05 Note:According to Bartleby Expert guideline, we can…

Q: A quality analyst conducts a small-scale study to compare the average capacity of two brands of AA…

A: Given:

Q: For a sample of 12 items from a normally distributed population for which the standard deviation is…

A: n = 12 u  = 220 sigma = 17 xbar = 230.8

Q: A consumer products company wishes to test at the 0.05 significance level whether its newly…

A: Given that : μ = 439σ = 25n = 57

Q: In a random sample, the weights of 24 Black Angussteers of a certain age have a standard deviation…

A:

Q: A simple random sample of 28 filtered 100-mm cigarettes is obtained from a normally distributed…

A: Given data : sample size, n = 28 population standard deviation,σ= 0.35 sample…

Q: A simple random sample of 29 filtered 100-mm cigarettes is obtained from a normally distributed…

A: The hypothesis is a statement about the population parameter.  A null hypothesis is a statistical…

Q: A two-sample t-test for a difference in means will be conducted to investigate whether the average…

A: It is given that the claim is average amount of money spent per customer at Department store M is…

Q: A researcher is examining the gradate student lifestyle at UNCG, and wants to find out how many…

A: (a) The sample size is, n = 144; the sample standard deviation is, s = 3. Since the population…

Q: The CEO of a large financial institution claims that, on average, their clients invest more than…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: In building an arena , steel bars with a mean ultimate tensile strength of 400 Megapascal (MPa )…

A: In building an arena , steel bars with a mean ultimate tensile strength of 400 Megapascal (MPa )…

Q: A simple random sample of 29 filtered 100-mm cigarettes is obtained from a normally distributed…

A: Given: Let n represent the random sample of filtered 100 mm cigarettes (n=29). Let s represents the…

Q: A manufacturer of air conditioners seeks to ensure that their air conditioners are efficient enough…

A: GivenMean(x)=7000standard deviation(σ)=10000sample size(n)=63α=0.01

Q: To test whether or not there is a significant difference in the average snowfall in Maryland, and…

A: The provided sample means are shown below: Xˉ1=5.4\bar X_1 = 5.4 Xˉ2=5.2\bar X_2 = 5.2 Also, the…

Q: An online food delivery service in metro manila claims that the delivery time is not greater than 30…

A: Given,sample size(n)=29sample mean(x¯)=32standard deviation(s)=4α=0.05

Q: An auto manufacturer claims that its new 4-cylinder Hybrid auto with manual shift averages 50 mpg…

A: Decision rule: Decision rule based on critical value approach: If test statistic ≤ ­­–t critical…

Q: When the P - value is equal to the alpha level, the null hypothesis should be accepted.

A: P-value is the probability value which is derived from test statistic and it is useful to decide…

Q: It is desired to determine what percentage of 60,000 young men in a city regularly exercise. For…

A: Given that sample size is n = 4000 Number of men who exercise daily, X = 1200

Q: A simple random sample of 27 filtered 100-mm cigarettes is obtained from a normally distributed…

A: For the given data Perform Chi square test for one population variance

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A: Type 1 error : - We we reject the true Null Hypothesis Type 2 error : - When we accept the false…

Q: er of Christmas light bulb claims that the average life of its product will exceed 40 hours. A…

A: Given: Sample mean=x¯=45Sample size=n=56Population standard deviation=σ=5Population mean=μ=40 The…

Q: A simple random sample of 26 filtered​ 100-mm cigarettes is obtained from a normally distributed​…

A: a.   Consider that σ is the population standard deviation of tar content of each cigarette.

Q: A simple random sample of 29 filtered​ 100-mm cigarettes is obtained from a normally distributed​…

A: Given that, Consider σ is the population standard deviation, s is the sample standard deviation n is…

Q: A cereal company claims that the mean weight of the cereal in its packets is not 12 oz.  Identify…

A: It is given that the claim is that the mean weight of the cereal in its packets is not 12 oz.

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Q: An inventor has developed a new, energy-efficient lawn mower engine. He claims that the engine will…

A:

Q: A simple random sample of 27 filtered 100-mm cigarettes is obtained from a normally distributed…

A: Assume that σ is the population standard deviation of tar content of each cigarette.

Q: A fashion industry analyst wants to prove that models featuring Liz laiborne clothing earn on…

A: Given: An analyst claims that model featuring Liz Claiborne clothing earn on average more than…

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A: Some amount of population is called sample. This sample can be large or small. If the value of the…

Q: A state school administrator claims that the standard deviations of U.S. history assessment test…

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Q: Each day, a fast-food chain tests that the average weight of its “two-pounders” is at least 32…

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A: Given : Claim : u = 8

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Q: oducts online. The shipping department manager claims that the average order shipped by their…

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Q: A simple random sample of 27 filtered 100-mm cigarettes is obtained from a normally distributed…

A: State the hypotheses

Q: A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: An economist collects a simple random sample of 32 teacher's salaries in Cititon, and finds a mean…

A: Given Information: Sample size n=32 Sample mean x¯=67000 Sample standard deviation s=8000…

Q: A rental agent claims that the mean monthly rent, μ, for apartments on the east side of town is less…

A: Mean, μ = 650 x = 631 s = 24 n =10 (a) Hypothesis:         H0: μ ≥650        H1: μ< 650

Q: The average weight of a package of rolled oats is supposed to be at least 18 ounces. A sample of 18…

A: Null hypothesis:A statistical hypothesis which is assumed and whose validity is tested for possible…

Q: taxi company tested a random sample of 10 steel-belted radial tires of a certain brand and recorded…

A: Given that  Tread wear data 48,000; 53,000; 45,000; 61,000; 59,000; 56,000; 63,000; 49,000; 53,000;…