Please answer the 4 questions. Refer to the attached photo below.

QUESTION 1 - 2 pts A group of researchers wanted to determine if the mean naphthalene of heavy cigarette smokers is higher than light cigarette smokers. A total of 20 participants (10 heavy cigarette smokers and 10 light cigarette smokers) were included in the study. Actual results of RStudio are shown below: F test for two variances F text to compare two variances uta: Naphthalene by Group alternative hypothesis: true ratio of variances is greater than 1 95 percent confidence interval : 4.390563 Inf atto of variances 13.9762 Student's t-test Welch's t-test Two Sample t-test wich Two Scaple t-test gate: Naphthalene by Group Naphthalene by Group Lue = 0.05292 t - 2.0718, of - 38.281, p-value - 8.06433 alternative hypothesis: true difference in means is not equal to 95 percent confidence interval: -1.837763 263.755763 -9.358331 271.276331 sample estimates: sample estimates: group Heavy mean in group Light mean in group Heavy mean in group Light Which of the following is a correct conclusion about naphthalene? Test at 5% level of significance. There is sufficient evidence that the mean naphthalene of heavy cigarette smokers is higher than light cigarette smokers (p=0.032). There is no sufficient evidence that the mean naphthalene of heavy cigarette smokers is higher than light cigarette smokers (p=0.064). There is sufficient evidence that the mean naphthalene of heavy cigarette smokers is higher than light cigarette smokers (p=0.026). QUESTION 3 - 2 pts A study wanted to compare the LDL of male and female patients. Results from 100 patients are shown in the table below: Gender n Mean + SD Male 28 2.5454 + 0.86556 Female 72 2.7133 + 0.91576 At 5% level of significance, do the data provide sufficient evidence that the mean LDL of male and female patients differ? What is the correct alternative hypothesis (H.)? The mean LDL of male and female patients are equal. The mean LDL of male and female patients are not equal. The mean LDL of male patients is higher than the female patients. QUESTION 4 - 2 pts A study wanted to compare the LDL of male and female patients. Results from 100 patients are shown in the table below: Gender n Mean + SD Male 28 2.5454 + 0.86556 Female 72 2.7133 + 0.91576 At 5% level of significance, do the data provide sufficient evidence that the mean LDL of male and female patients differ? In performing the F test for two variances, what is the value of df,? 71 72 28 QUESTION 5 - 2 pts A study wanted to compare the LDL of male and female patients. Results from 100 patients are shown in the table below Gender n Mean + SD Male 28 2.5454 + 0.86556 Female 72 2.7133 + 0.91576 At 5% level of significance, do the data provide sufficient evidence that the mean LDL of male and female patients differ? What is the correct conclusion? There is no sufficient evidence that the mean LDL of male and female patients differ. There is sufficient evidence that the mean LDL of male patients is less than the females. There is no sufficient evidence that the mean LDL of male patients is less than the females