The piston diameter of a certain hand pump is 0.5 inch. The manager determines that the diameters are normally distributed, with a mean of 0.5 inch and a standard deviation of 0.005 inch. After recalibrating the production machine, the manager randomly selects 28 pistons and determines that the standard deviation is 0.0043 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the α = 0.10 level of significance?

Q: Determine the p-value for this hypothesis test rounded to 4 decimal places.

A: Provided information is, Dr. Math Prodigy claims that less than 60% of students like mathematics.…

Q: What are the 2 variables being correlated (or assumed correlated) in the Hypothesis Statement?

A: We want to tell the hypothesis of correlation whether they accept or reject.

Q: Are freshmen psychology majors less likely to change their major before they graduate compared to…

A: From the given information we conduct Z test for two proportion.

Q: describe the situation in terms of hypotheses and/or errors.

A: when we are conducting a statistical test and determine that our sample shows insignificant result.…

Q: What are the possible outcomes of hypothesis test?

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

Q: nteered to take part in the study. - Design how you would carry out the experiment, what tasks the…

A: Answer) In order to test whether the herb work on insomnia. First I'll make hypothesis. Null…

Q: What does null hypothesis ascertain?

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

Q: What is the importance of the null and alternitive hypotheses?

A: Null and alternative hypotheses

Q: Explain what is Null and Alternative Hypotheses, and how are they link to each other?

A: Null Hypothesis: this means there is no statistical significance or difference between the two…

Q: what does failing to rejectthe null hypothesis mean?

A: First, it is possible that the effect truly doesn’t exist in the population, which is why the…

Q: pe II error represent the possibility that your rejection of a null hypothesis was incorrec

A: In hypothesis testing, a type I error occurs when the null hypothesis (Ho) is rejected when it is…

Q: Additionally, please Identify the null and alternative hypotheses.

A: From the given information, the claim of the problem is ‘the mean pulse rate of adult males is equal…

Q: Help find the test statistic, p-value, if we reject the null, and if there is suffienent evidence.…

A:

Q: What does it mean that the null and alternative hypotheses are mutually exclusive and exhaustive and…

A: We know that  mutually exclusive cannot both occur at the same time as the occurrence of one outcome…

Q: Explain null hypothesis vs alternative hypothesis.

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

Q: Identify situations in which it is important to estimate power in relation with null hypothesis?

A: A test of hypothesis consists of 2 hypotheses: the null, H0, and the alternative, H1. Power: The…

Q: Describe about Rejecting null hypothesis implies.

A:

Q: When are the null and alternative hypotheses are correct or not correct when making a statement of…

A: In hypothesis testing related to patients with myocardial infarction (MI), the null and alternative…

Q: What are the two types of hypotheses used in a hypothesis test? How are they related? What are the…

A:

Q: If in general a reasearch question needs to be answered by using the null and alternative hypotheses…

A: In testing of hypothesis, the first step is to set the Null and the research hypothesis. The null…

Q: Can you guys help me on this? Thank you!

A: a.H0​:p1​−p2​≤0HA​:p1​−p2​>0 b. 0.75 c. 0.72 d.test statistic: z = 1.25p-value: p =…

Q: What does the decision to retain null hypothesis implies?

A: