Dood day,

I am busy studying at the moment, but I am struggling with the following questions.

It would be greatly appreciated if you could assist me in providing the explanations and answers to the following questions.

Please note that the explanations should be to the specific questions that I put in the photo.

I look forward to your reply.

kind regards.

Question 1 1 points Save Answer A new medical company claims that more than 70% of the workers at ABSA are satisfied with their new medical scheme. A random sample of 150 workers showed that 100 are satisfied with their new medical scheme. Test the claim at a 10% significant level. The critical value is 0.675 O 1.282 O = 1.645 2576 O +1.96 Question 3 1 points Save Answer Consider the following partially completed one-way analysis of variance table ANOVA Source of variation SS MS Treatments 583.2 Flab Residuals 15 Total 714.0 120 The missing value indicated by (f) is: at a = 0.05 O 4.62 O 2.96 O 2.905 O 2.85 O 13.38 Question 4 1 points Saved According to "Dietary Goals for the United States (1997), high sodium intake may be related to ulcers, stomach cancer, and migraine headaches. The human requirement for salt is only 220 milligram per day, which is surpassed in most single servings of ready-to-eat cereals. If a random sample of 20 similar servings of Special K has a mean sodium content of 244 milligrams and a standard deviation 24,5 milligrams does this suggest at 0,05 level of significance that the average sodium content for single servings of Special K is greater than 220 milligrams? Assume the distribution of sodium content to be normal. State the null and alternative hypothesis. Hotg = 220;Hat/ > 220 O Hop = 244 : Ha:H > 244 O Hot = 220 ; Hall S 220 O Ho:H = 244; HiH S 244 Question 7 1 points Save Answer The test marks for 29 students studying STSA 1624 produced a mean of 72,8% and a variance of 275,56%. If the distribution of the marks may be assumed to be approximately normally distributed, determine the upper limit, if a 95% confidence interval is set up for the population standard deviation for the population of 1700 registered students O 22.4491 O 147 41 173.54 O 13.1735 O 503.96 Question 8 1 points Save Answer in a preliminary study to determine whether the installation of a camera designed to catch cars that go through an intersection on a red traffic light affects the number of violators, the number of violators that go through an intersection on a red traffic light was recorded for each day of the weak before and the week after the camera was installed. Test at a 1% level of significance whether the installation of a camera resulted in a reduction of the number of violators that go through the intersection on a red traffic light, given the results below. Give the critical . Day Sunday Monday Tuesday Wednesday Before 12 Thursday Friday Saturday 16 18 31 18 16 16 $24363 2.101 O 3.143 O # 1.796 O 1.8850 Question 9 1 points Save Answer The GPA at a particular school has an average of 2.89 with a standard deviation of 0.63. A random sample of 38 students from that school is collected. Find the probability that the average GPA for this sample is greater than 3.0. O 0.0763 O 0.8599 O 0.1401 O 0.5675 0.5636 O 0.4325 Question 10 1 points Save Answer A new medical company claims that 70% of the workers at ABSA are satisfied with their new medical scheme. A random sample of 150 workers showed that 100 are satisfied with their new medical scheme. Test the claim at a 10% significant level . The alternative hypothesis is O P# 0.7 O P 07 O P #0.67 O p > 0.67 Question 10 1 points Save Answer A new medical company claims that 70% of the workers at ABSA are satisfied with their new medical scheme. A random sample of 150 workers showed that 100 are satisfied with their new medical scheme. Test the claim at a 10% significant level . The alternative hypothesis is Op= 07 O P 0.7 O P #0.67 O P > 0.67 Question 11 1 points Save Answer The test marks for 29 students studying STSA 1624 produced a mean of 72,8% and a variance of 275,56%. If the distribution of the marks may be assumed to be approximately normally distributed, determine the lower limit, if a 95% confidence interval is set up for the population variance for the population of 1700 registered students O 619.24% 147.41% 173.54% 151.32% 503.96%