After observing that the average daily sale was only 12 units alongside with standard deviation of 4 units, the Agricultural Technology's store manager decided to take on a new marketing strategy. Daily sales under the new marketing strategy were recorded for 25 days after which period the average was found to be 15 units. Utilizing a 0.05 level of significance, test the claim that the new marketing strategy increased the daily sales.

Q: Discuss type I and type II errors in hypothesis testing. Give an example of each type oferror

A: The question is about error in hypothesis testing.Introduction :1 ) Hypothesis testing : It is a…

Q: 12. If a hypothesis test rejected the null hypothesis, would it still reject the null hypothesis if…

A: Given information- We have given that a hypothesis test rejected the null hypothesis. We have to…

Q: the difference in the null hypothesis and the alternative hypothesis?

A: In testing of hypothesis, sometimes exact sampling distribution of the test statistic can be…

Q: Define "power" in relation to hypothesis testing.

A:

Q: Describe an example of a type-II error in hypothesis testing.

A: Type-II error :  In statistical hypothesis testing, a type II error is a situation wherein a…

Q: (a) a = 0.01, P = 0.06 answer: (b) a = 0.07, P = 0.06 answer: (c) a = 0.06, P = 0.001 answer:

A: (a)Level of significance ɑ=0.01, p value=0.06   (b)level of significance ɑ=0.07, p value=0.06 (C)…

Q: Consider the Locations of each as urban(1), suburban (2) and rural (3).  Conduct a hypothesis test…

A: The chi-square goodness of fit test can be used to determine whether the proportion of schools at…

Q: A local chess club claims that the length of time to play a game has a mean of 22 minutes or more.…

A: Solution Given that  A local chess club claims that the length of time to play a game has a mean of…

Q: If a null hypothesis is rejected using a one-tailed test it would be rejected by the two-tailed test

A: A one-tailed test is used to ascertain if there is any relationship between variables in a single…

Q: A statistician selects a sample of 20 participants and makes the decision to retain the null…

A: Hypothesis test are used to determine the relationship between the sample and population. Hypothesis…

Q: If a researcher is wrong in his decision and he rejects the null when the null is true, what type of…

A: Type I error: The type I error is the rejection of the null hypothesis when it is actually true.…

Q: When do we use alpha and beta in hypothesis testing?

A: Basics: Alpha is the probability of  making  Type I error in hypothesis test . i.e incorrectly…

Q: Be able to state the null hypothesis for both one-tailed and two-tailed tests?

A:

Q: What is the formula for a 2-sample hypothesis test?

A:

Q: The one-tailed test only uses the null hypothesis whereas a two-tailed test uses both the null…

A: One tailed test :          The one tailed test  in which critical region is one sided it is either…

Q: Most researchers would like the hypothesis test to reject the null hypothesis.  True  False

A: From the given information, Most researchers would like the hypothesis test to reject the null…

Q: If a researcher is wrong in his decision and he rejects the null when the null is true, what type of…

A: Given, If a researcher is wrong in his decision and he rejects the null when the null hypothesis is…

Q: Describe type I and type II errors for this hypothesis test?

A: A type 1 error is also known as a false positive and occurs when a researcher reject the null…

Q: H₁: The distribution of emergency room needs for patients who come by car is the same as it is for…

A: Hi! Thank you for the question. As you have specifically asked for help with parts C and G, we have…

Q: Explain null hypothesis vs alternative hypothesis.

A: In theory of statistics, hypothesis is a statement regarding the parameter of interest.

Q: Ho: μ H₁: 13 kg > 13 kg Level of significance: a = = 0.025 Sample size: n = 36 Test statistic: t =…

A: Given: H0 : μ = 13 kg H1 : μ > 13 kg Sample size n = 36 Significance level α = 0.025…

Q: If p- value is greater than alfa, the null hypothesis is not rejected. True O False

A: The p-value measures the probability of getting a more extreme value than the one you got from the…

Q: Write null and alternative

A: Null Hypothesis:  X = 60%

Q: provide an example of hypothesis testing using the t score test

A:

Q: Explain the Retaining null hypothesis is a Weak Decision.

A:

Q: 2. Is the hypothesis above a one-tail or a two-tail hypothesis?

A: We have given that  Sample size n= 1000 Favorable cases x = 89 Sample proportion p^=x/n

Q: A medical research team wanted to perform a statistical inference procedure to see if there is a…

A: Here we have discuss about two population proportion.

Q: Classify the conclusion of the hypothesis test as a Type I error, a Type II error, or a correct…

A: Given information H0:μ=486H1:μ≠486 Suppose the results of the sampling lead to reject the null…

Q: Describe about the New Null Hypothesis for One-Tailed Tests.

A:

Q: Suppose that you are curious to find out if there is any relationship between householdhead and…

A: Given data: Respondent  Household head SEX AGE Hours worked per week Main type of work  Length of…

Q: When conducting a hypothesis test (or test of significance), select all the true statement. assume…

A: True statement and fill in the blanks.

Q: In performing a hypothesis test, one should decide whether to reject or not reject the null…

A: We have to find statement is true or false.

Q: Describe the significance of null hypothesis.

A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…

Q: Dyson Company in Senai Johor plans to produce a new hair product known as Dyson Supersonic. The…

A: Given, Dyson Company in Senai Johor plans to produce a new hair product known as Dyson Supersonic.…