why a t Reducing snoring. Snoring is an extremely common and burdensome ce dition that occurs when vibrating soft tissue obstructs the upper airway durz sleep. Researchers investigated the effectiveness of throat exercises designed strengthen that soft tissue. They recruited otherwise healthy adult patients wi had recently sought medical care for a primary complaint of snoring. At randor the subjects were divided into two treatment groups, with the treatments lastir for three months. The control group was asked to perform deep breathing exe cises daily and to sleep with a nasal dilator strip. The therapy group was instructe to perform a series of throat exercises three times a day. After these three months subjects were recorded during sleep to assess their snoring frequency (in numbe of snores per hour). Here are the findings:12 Control 2 4 6 6 6 18 23 46 55 75 139 174 198 218 223 294 420 527 540 637 53 69 87 101 Treatment 7 10 18 27 51 52 104 141 155 182 222 256 389 416 626 Does the study provide significant evidence that throat exercises are better than

In a study conducted at Virginia Tech, the plasma ascorbic acid levels of pregnant women were compared for smokers versus nonsmokers. Thirty women in the last three months of pregnancy, free of major health disorders and ranging in age from 15 to 32 years, were selected for the study. Prior to the collection of 20 ml of blood, the participants were told to avoid breakfast, forgo their vitamin supplements, and avoid foods high in ascorbic acid content. From the blood samples, the accompanying plasma ascorbic acid values were determined, in milligrams per 100 milliliters. Is there sufficient evidence to conclude that there is a difference between plasma ascorbic acid levels of smokers and nonsmokers? Assume that the two sets of data came from normal populations with unequal variances. Use a P-value. Click the icon to view the plasma ascorbic acid values. Let sample 1 be the nonsmokers and let sample 2 be the smokers. State the null and alternative hypotheses. Hoi Hi-H2 = 0 (Type integers…

A sleep therapist wanted to see if a herbal tea advertised as a sleep aid really worked. He located 46 people with sleep problems and matched them into pairs on the basis of sleep problems and suggestibility. He then randomly assigned one person from each pair to drink the tea at bedtime (the experimental group), while the control group went to sleep as they normally did. He used an EEG to measure the minutes to sleep onset (the fewer the minutes to sleep onset, the better). He found MControl = 21.20, MExperimental = 19.70, sD = 5.47. Use an alpha of .05 and a two-tailed test to determine if the herbal teach was effective.

Can you please complete the chart and what are the t-criticals?