Test the hypothesis that the average amount o a a particular substance in a container is...

Test the hypothesis that the average amount o a a particular substance in a container is µ0 = 10.1 liters, if the recorded contents of a random sample of 8 containers are 10.1, 9.9, 9.8, 10.4, 10.2, 10.6, 9.7, 9.5. Use a 0.05 level of significance and assume that the distribution of contents is normal. Perform the test against the alternative hypotheses (a) µ 6= µ0, (b) µ > µ0 and (c) µ < µ0. (Hint: Use the t–distribution)

Expert Solution

orchestra answered 1 year ago

An online travel agency would like to test the hypothesis that the proportion of a particular...

An online travel agency would like to test the hypothesis that the proportion of a particular airline's flights that arrive on-time is less than 0.90. A random sample of 140 such flights found that 119 arrived on-time. The agency would like to set α=0.05. This is A) Upper tail test, B) lower tail or C) two-tail test

What is the value o f the test statistic? what is your hypothesis testing conclusion?

1) A radioactive substance decays at a rate proportional to the amount of the substance at...

1) A radioactive substance decays at a rate proportional to the amount of the substance at present time. Initially 200 grams of a the substance was present and remain 80% of the initial amount after 2 hours. A.) Determine the amount of the substance remaining after 10 hours (counted in grams) B.) Determine the time that 60% of the initial amount of the substance has decayed (counted in hours)

1. For a particular scenario, we wish to test the hypothesis H0 : p = 0.48....

1. For a particular scenario, we wish to test the hypothesis H0 : p = 0.48. For a sample of size 50, the sample proportion p̂ is 0.42. Compute the value of the test statistic zobs. (Express your answer as a decimal rounded to two decimal places.) 2. Which of the following is a valid alternative hypothesis for a one-sided hypothesis test about a population proportion p? A. p = 0.6 B. p < 0 C. p ≠ 0.7 D....

In using statistical test of hypothesis in general and in business in particular, business practitioners face...

In using statistical test of hypothesis in general and in business in particular, business practitioners face two types of errors: type I and type II error. Discuss each type of error in detail. In your opinion which type has more severe consequences in business? Support your opinion by providing an example. Also, discuss what is P-Value and its connection to type I error.

Conduct a hypothesis test with a 5% level of significance on the claim that the average...

Conduct a hypothesis test with a 5% level of significance on the claim that the average annual salary for a registered nurse in the state of Washington in 2017 was $55,000. Plainly state your null and alternative hypothesis, what type of test you are using, and why. Data: 61000, 57700, 120100, 8500, 55200, 53000, 40700, 48800, 33800, 50100, 40900, 56300, 56100, 34600, 2100, 42600, 2400, 48600, 21300, 52600, 87900, 29700, 43300, 33200, 41500, 47600, 79100, 38300, 8500, 112000, 10100, 79100,...

MICROBIOLOGY QUESTION: LD50: Amount of substance required to kill 50% of the test population Would you...

MICROBIOLOGY QUESTION: LD50: Amount of substance required to kill 50% of the test population Would you want a drug being administered to have HIGH or LOW LD50 value? Is there a formula/ way to calculate this value?

The average time it takes to complete a particular sociology test is 86.5 minutes. In a...

The average time it takes to complete a particular sociology test is 86.5 minutes. In a recent study of 26 individuals that took it a particular test the average amount of time to complete the sociology test was 83.4 minutes. The sample standard deviation was 8.7 minutes. At the 0.10 level of significance can it be concluded that the average amount of time it takes to complete the particular sociology test is less than 86.5 minutes.

We wish to test the hypothesis that two types of customer spend the same amount on...

We wish to test the hypothesis that two types of customer spend the same amount on average. From a sample of 40 “Type 1” customers, the average spend is 26.7 with a variance of 64.1, while, from a sample of 50 “Type 2” customers, the average spend is 23.3 with a variance of 55.8. The p-value for the hypothesis test is approximately what?

Given the following hypothesis test: “It is believed that the mean amount of water per day...

Given the following hypothesis test: “It is believed that the mean amount of water per day that the Gondorans drink is L liters. A random sample of 36 Gondorans is observed. The average amount of water they drink per day is 1.62 liters, with a standard deviation of 0.4 liters. Is the mean amount of water that Gondorans drink less than L liters? Test with α = 0.025.” What is the biggest possible value of L (rounded to two digits...

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