3. A drug company alleges that the average time for a cough syrup to take effect is 15 minutes. (H0): (Ha): Hypothesis test: 4. A researcher wan she had last year. to know if there is relationship between driver's age and the number of accidents he or (H0): (Ha): Hypothesis test: 5. A teacher wants to know if there is significant difference in the academic performance between male and female students enrolled in Statistics. (H0): (Ha): Hypothesis test: ANSWER SHEET (Module 5). Activity 3. Formulate the Null (H,) and alternative (H.) hypotheses of the following research problems. Identify the hypothesis test is one-tailed left directional test, one-tailed right directional test or a two-tailed non directional test. 1. A psychologist wants to know how depression affects work performance. (H0): (Ha): Hypothesis test: 2. A researcher wants to know if there is a link between the number of hours spent in playing online games and obesity. (H0): (Ha): Hypothesis test: 3. A drug company alleges that the average time for a cough syrup to take effect is 15 minutes. (H0): (Ha): Hypothesis test:

Q: 13. Explain the difference between correlation and causation in inferential statistics.

A:

Q: random set of 258 people who have pets were polled to see if there was a correlation between gender…

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

Q: What is the best statistical test that I can use on a dataset where I am trying to establish a…

A: Suppose we need to test whether there is correlation between two variables X and Y based on the…

Q: What effect does Switzerland have on the correlation? Explain.

A: Correlation is a statistical term describing the degree to which two variables move in coordination…

Q: A researcher wanted to examine the effect of a new math study skills program on second graders.…

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

Q: 3) The researchers want to know if female birds spend more time resting than male birds. There are…

A: t-test compares the means of two independent groups, in this case the mean resting time of male…

Q: 1. A researcher aims to examine the relationship between race and delinquency. He considers using…

A: Introduction: It is of interest to identify the assumptions necessary to conduct a chi-square test,…

Q: The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An…

A: (a) State the hypotheses.

Q: An examiner is researching whether there is a difference in burnout between employees paid hourly…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: A study was conducted to determine if a person's resting heartbeat (how many beats per minute) was…

A: The observed data is   Exercises Regularly Does not Exercises Regularly Total Above 70 BPM 18…

Q: beople with elevated cholesterol els difers bet ween nen and wom

A: Given : n1=244 , n2=232 , X1=73 , X2=44 ,  α=0.05 The estimates of the sample proportions are ,…

Q: 24. You use a line of best fit for a set of data to make a prediction about an unknown value. The…

A: The question is about correlation Introduction : Correlation coeff. : 1 ) It measures the strength…

Q: The Pearson's correlation coefficient between two variables, age and health, based on 16…

A: Given: sample size n=16, correlation coefficient=-0.48 based on variables age and health.…

Q: (Previous exam question). A wine producer is trying to decide if it is time to harvest his grapes.…

A:

Q: Suppose you want to test the claim that a population mean equals 46. (a) State the null hypothesis.…

A: To test the claim that a population mean equals 46.   a) Null Hypothesis: H0: μ = 46

Q: oe has learned how to use in R, but hasn’t really bothered to learn much about statistics. He…

A: Correlation: Correlation determines the size and direction of the relationship between the two…

Q: Last year over 12,000 students took an entrance exam at a certain state university. Felipe's score…

A: a) The correct answer is "Option b".

Q: Explain in each case what is wrong. a) "There is a high correlation between the gender and race of…

A: In each case what is wrong. The wrong in the first statement of (a) "There is a high correlation…

Q: 22) A correlation of -0.9 indicates a __________ relationship between the variables.

A: we know that correlation coefficient (r) always lies between -1 and +1i.e -1≤r≤11)if r=-1 it means…

Q: When performing a statistical analysis on two variables, you identify that there is a very strong,…

A: Let the two variables be X and Y When performing a statistical analysis on two variables, we…

Q: The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An…

A:

Q: A drug considered unsafe if more than 5% of the patients develop serious side effects. In order to…

A: Given Hypothesis- Null Hypothesis, H0: π ≤ 0.05 Alternate Hypothesis, Ha: π > 0.05 We know that-…

Q: The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An…

A: a).The hypothesis to be tested here is- H0:p=0.152H1:p<0.152 b). Here, X=31 n=260 Therefore the…

Q: Suppose exam grades were recorded for 20 students in the class, but one of the grades is no longer…

A: Given Average of 20 student= 80 Average of 19 student= 82