The records of a casualty insurance company show that, in the past, its clients have had a mean of  1.7  auto accidents per day with a standard deviation of  0.05 . The actuaries of the company claim that the standard deviation of the number of accidents per day is no longer equal to  0.05 . Suppose that we want to carry out a hypothesis test to see if there is support for the actuaries' claim. State the null hypothesis  H0  and the alternative hypothesis  H1  that we would use for this test.

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A: Givenμ n = 120 , xbar = 170 S2 = 100 S = 10

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Q: H 0 020 S 0<0 5

A:

Q: It is believed that the average grade on an English essay in a particular school system for females…

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A: Introduction - z-score  z=x-μσwhere ,x=score σ=standard deviation μ=mean

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A: Total pizzas made = 20 proportion of Mushroom pizzas = 0.7

Q: A simple random sample of 85 basketball players is taken from different teams and their mean weight…

A:

Q: An independent consumer group published its finding that the lifetimes of electric bulbs…

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Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Given Standard deviation=0.04

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Q: An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 71 type K…

A:

Q: Cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dL…

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Q: Some manufacturers claim that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than…

A: Given that, Some manufacturers claim that non-hybrid sedan cars have a lower mean miles-per-gallon…

Q: A sample of 20 elements selected from a population produced a mean of 65 and a standard deviation of…

A: State the hypotheses. That is, the means of two populations are equals. That is, the means of two…

Q: Marketing companies have collected data implying that teenage girls use more ring tones on their…

A: Given, n1=20 n2=20 μ1=3.2σ1=1.5μ2=1.7σ2=0.8 Claim: The means are approximately the same or if the…

Q: he records of a casualty insurance company show that, in the past, it’s clients have had a mean of…

A: Given that SD=0.06

Q: A powder diet is tested on 49 people and a liquid diet is tested on 36 different people. The…

A:

Q: A company is doing a hypothesis test on the variation of quality from two suppliers. They believe…

A: Given that  Sample sizes n1=37 , n2=29  Standard deviation s1=4.2045 s2=9.6752 Level of significance…

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A: The provided sample means are shown below: Xˉ1=3.4\bar X_1 = 3.4 (For Teenage girls) Xˉ2=1.7\bar X_2…

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A: Given information- We have given that the breaking strengths of cables produced by a certain company…

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Let σ denotes the population standard deviation of the number of accidents per day. The claim of the…

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: The claim of the test is that, the standard deviation of the number of accidents per day is no…

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A: GivenMean=110standard deviation=15.5

Q: Student one claims that his grades this semester are higher than student two. They decide to test…

A: Given information : Student 1 : The number of classes for student 1 is The average grade is:…

Q: he records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: The null hypothesis can be defined as the hypothesis of no difference or equality, while the…

Q: hich of the following is the correct statement of the null hypothesis for the test?

A: In hypothesis testing, a null hypothesis can be defined as the hypothesis of no difference or…

Q: A researcher is using a one-tailed hypothesis test with α = .01 to evaluate the effect of a…

A:

Q: GreenBeam Ltd. claims that its compact fluorescent bulbs average no more than 3.50 mg of mercury. A…

A: Given  Level of significance ɑ=0.01, mean μ=3.5, n=25, sample mean x̄=3.59

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A: Solution: Here, it is to be determined that if the mean weight differs from 20 grams. State the…

Q: An independent consumer group published its finding that the lifetimes of electric bulbs…

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Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Testing of Hypothesis: Testing of hypothesis is a rule which, when the sample values have been…

Q: Marketing companies have collected data implying that teenage girls use more ring tones on thei…

A: As the population standard deviation is not known, we will use a t-test. An F-test is used to test…

Q: 95% confidence interval for the average increase of height.

A: Given that  In year 1970 In year 2020 Mean (μ1)=30  Mean (μ2) = 31.5  Variance (σ12) = 4.5…

Q: Listed in the data table are IQ scores for a random sample of subjects with medium lead levels in…

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

Q: An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 71 type K…

A: Given, nk = 71x¯k = 9.33sk = 0.153nQ = 50x¯Q = 9.68sQ = 0.366     To find, test the claim that the…