Chapter 15, Problem 15.52AC

Please can you help me with these questions.  I have attached the screen shot

Please help by providing detailed workings. Answers to a minimum of 6 d.p. Thanks

Complete part C. C. Compute an estimate of the population parameter.  Telephone survey of 2980 adults in certain country, 27% reported they own least one gun. Researchers want to estimate the true percentage of adults in that country that own at least one gun.

1. A physician wanted to compare two types of pain relief. One is medication and the other is using pressure points. To test whether medication relieves pain faster, they have 10 migraine sufferers compare both types of pain relief and record their observations on a standardized scale. A coin flip was used to determine which type of headache relief each individual would try first. Results indicated that there was no difference in the two types of pain relief. Complete parts (a) through (f) below. (a)What type of experimental design is this? (b)What is the response variable in this study? (c)What is the factor that is set to predetermined levels? What is the treatment? (d)Identify the experimental units. (e)Why did the physician use a coin flip to determine which headache relief each individual would try first? (f) Draw a diagram to illustrate the design.

How can I calculate part B using excel?

The analysis of the results of a budget survey of 150 families gave an average monthly expenditure of Rs. 120 on food items with a S.D. of Rs. 15. After the analysis was completed it was noticed that the figure recorded for one household was wrongly taken as Rs. 15 instead of Rs. 105. Determine the correct value of the average expenditure and its S.D.

According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 240 births for which the mother was 35 to 39 years old and found 26 low-birth-weight babies. Complete parts (a) through (c) below. Họ: 0.071 Hy: 0.071 Use technology to compute the P-value for this test. Use the Tech Help button for further assistance. P-value = (Round to three decimal places as needed.) State a conclusion for this test in the context of the obstetrician's question. Choose the correct answer below. O A. Do not reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the a = 0.05 level of significance. B. Reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of…

The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 95​% confident that his estimate is within five percentage points of the true population​ percentage? Complete parts​ (a) through​ (c) below.       Question content area bottom Part 1 ​a) Assume that nothing is known about the percentage of adults who have heard of the brand.   n=enter your response here ​(Round up to the nearest​ integer.) Part 2 ​b) Assume that a recent survey suggests that about 80​% of adults have heard of the brand.   n=enter your response here ​(Round up to the nearest​ integer.) Part 3 ​c) Given that the required sample size is relatively​ small, could he simply survey the adults at the nearest​ college?     A. ​No, a sample of students at the nearest college is a cluster​ sample, not a simple random​ sample, so it is…

The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 95​% confident that his estimate is within five percentage points of the true population​ percentage? Complete parts​ (a) through​ (c) below.       Question content area bottom Part 1 ​a) Assume that nothing is known about the percentage of adults who have heard of the brand.   n=enter your response here ​(Round up to the nearest​ integer.)