Identify the null hypothesis, alternate hypothesis, test statistic, P-Value, conclusion about the null hypothesis, and final conclusion the addresses the original claim. A manufacturer considers his production process to be out of control when defects exceed 3%. In a random sample of 85 items, the defect rate is 5.9% but the manager claims that this is only a sample fluctuation and production is not really out of control. At the 0.01 level of significance, test the managers claim.

Q: Road Transport Department claims that the mean speed of cars on a highway is 114 km/h. An insurance…

A: Introduction:  t-test The t-test is used when to test the difference between the two population…

Q: 1. A production line is producing electrical components. Under normal conditions 2.4% of the…

A: Hypothesis testing: It is the statistical procedure to accept or reject the statistical hypothesis…

Q: In one of the hypothesis study, Robin considers to increase the alpha level. Briefly explain the…

A: In one of the hypothesis study, Robin considers to increase the alpha level.  Its effect on the Type…

Q: We examine the relationship between gender and fear of walking at night in their neighborhood (FEAR)…

A: Solution: Observed frequency table  Afraid to walk at night  Men  Women  Total  Yes  77 175 252…

Q: What would you conclude based on an α=0.05 ​level?   We reject   the null hypothesis and do not…

A: From the previous information, it is known that the p-value is  0.9857. And level of significance is…

Q: Part 1 : A two-tailed hypothesis test is being used to evaluate a treatment effect with α = .05.  If…

A: As per our policy, we can answer only one question at a time, please make a new request for other…

Q: (b) If the critical value is 4.605 at a significance level of 0.10, can we reject the null…

A: Answer b) In hypothesis testing, there are two ways to determine whether there is enough evidence…

Q: he body weight of a healthy 3-month-old colt should be about μ = 62 kg. (a) If you want to set up a…

A:

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

A:

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

A: Step 1: It is given that, the clients of the company have had a mean of 1.8 (= µ) auto accidents…

Q: If p-value is very large like 0.9, what can we do about a null hypothesis? If p-value is very small…

A: In statistics, any hypothesis testing is carried out by fixing null and alternative hypotheses. Then…

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

A: Consider that σ2 is the population variance of auto accidents per day for the clients.

Q: A sample of 72 values is taken from population that is normally distributed. You are doing a…

A: From the provided information,The test is two tailed.

Q: The plant manager is preparing a presentation that includes the last three years of injuries which…

A: Given Information: There are 7 hand injuries and 7 other injuries. There are 4 expected hand…

Q: State the null and alternative hypotheses for this test. Compute the value of the Test Statistic?…

A: Let p be the proportion of defectives produced by the machine. Given that sample size n=100,  Number…

Q: You are conducting a study to see if the probability of a true negative on a test for a certain…

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Q: A researcher surveys 50 individuals in the North Ward of Thunder Bay, and 40 in the South Ward, and…

A:

Q: ds of a casualty insurance company show that, in the past, its clients have had a mean of 1.7 auto…

A: Here it is given that- Mean (μ) = 1.7 Variance (δ2) = 0.0036

Q: You have a one-sided hypothesis test with alpha level 0.05 and p-value of 0.04. Which of the…

A: Given: α=0.05P-Value=0.04

Q: As you might remember, on the first exam I asked everybody the same question four times. The point…

A: It is given that the level of significance as 0.05 and the z=1.68 (one-tailed test). Also, based on…

Q: A manufacturer of potato chips would like to know whether its bag filling machine works correctly at…

A: Null hypothesis: Alternative hypothesis:

Q: a large state University located just a bit North of us. Your null hypothesis is that the overall…

A:

Q: If we have a sample of size 100 with sample mean breaking strength of 1050 pounds from a population…

A: Given that n=100x¯=1050σ=200μ=1000 In the given situation, the claim is the population mean breaking…

Q: A news article that you read stated that 52% of voters prefer the Democratic candidate. You think…

A: Given Information- Sample size, n = 266 Significance level, α = 0.05 Sample proportion is,…

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

A: Given that  Mean =1.8 Variance =?2=0.0016

Q: A study suggests that the 25% of 25 year olds have gotten married. You believe that this is…

A: Given ,            Ho:P∧=0.24           H1:P∧≠0.24Here , sample proportion=p∧          population…

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

A: Solution-: x¯=1.7,σ2=0.0036 We state the null and alternative hypothesis

Q: A Chicago-based firm has documents that must be quickly distributed between two delivery services,…

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Q: It is easier to reject the null hypothesis if the researcher uses a smaller alpha (α) level. choose…

A: We know that, Type I error is – In this we reject the null hypothesis which is actually true called…

Q: Daily anxiety was measured on a scale from 1 (not at all anxious) to 5 (very anxious) in a random…

A: Interpretation:The 95% confidence interval can be interpreted as follows:One can be 95% confident…

Q: 1. We test if the majority of AUM students are females. We collected a sample with sample size 25…

A: From the given information, it is clear that,  Sample size n=25 x=20 level of significance α is 0.01…

Q: Read through this scenario and look at the data that was collected.  State the null and all possible…

A: Provided ANOVA result with replication

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

A:

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

A: Given information:

Q: QUESTION 4 An executive believes that no more than 80% of the company's employees take all of their…

A: From the above data  We are given that  P value = 0.0422 Level of significance =0.05

Q: selec Samp mple to evaluate the effec has a mean of M = 32 al ng would definitely increa: esis? on…

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Q: Suppose a hypothesis test was performed with a level of significance of 0.05. Then if the null…

A: Level of significance is the type 1 error which is rejecting the true Null Hypothesis.  So here the…

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

A: It is been asked to find the hypotheses to test whether the variance of number of accidents per day…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.