An article in Medicine and Science in Sports and Exercise "Electrostimulation Training Effects on the Physical Performance of Ice Hockey Players," (2005, Vol. 37, pp. 455-460) considered the use of electromyostimulation (EMS) as a method to train healthy skeletal muscle. EMS sessions consisted of 30 contractions (four-second duration, 85 Hz) and were carried out three times per week for three weeks on 17 ice hockey players. The ten-meter skating performance test showed a standard deviation of 0.09 seconds. Construct a 99% confidence interval of the standard deviation of the skating performance test. Assume population is approximately normally distributed. Round your answers to 3 decimal places. i sos i

Water availability is of prime importance in the life cycle of most reptiles. To determine the rate of evaporative water loss of a certain species of lizard at a particular desert site, 34 such lizards were randomly collected, weighed and placed under the appropriate experimental conditions. After 24 hours, each lizard was removed, weighed, and its total water loss was calculated by subtracting its body weight after treatment from its initial body weight. Previous studies have shown that the relative frequency distribution of water loss for this species of lizard has a mean of 3.1 grams and a s.d. of 0.8 gram. a) What is the approximate sampling distribution of x , the mean water loss of the 34 lizards

In a single-blind controlled experiment comparing the efficacy of oral administration vs. intramuscular injection to remedy Vitamin D deficiency in the population of healthy adults ages 18–60, a team of researchers randomly recruited and assigned a sample of 12 subjects to the intramuscular injection (IM) group. Before administering the single intramuscular injection of 100,000 IU of Vitamin D to each subject in the group, the researchers measured individual baseline blood serum concentration of Vitamin D (baseline 250HD) in units of nanomoles per liter. The team reported the sample mean baseline 250HD in the IM group as 33 nmol/l with a sample standard deviation of 8.5 nmol/l. Assuming that baseline 250HD was approximately normally distributed in the population, the team also reported the 95% confidence level t-interval for the mean baseline 250HD as (26.3, 39.7). Select the correct interpretation of the 95% confidence level t-interval for the mean baseline 250HD. The researchers…

8.3-4 4 please help thank you

An article in the Journal of Human Nutrition and Dietetics [“The Validation of Energy and Protein Intakes by Doubly Labeled Water and 24-Hour Urinary Nitrogen Excretion in Post-Obese Subjects” (1995, Vol. 8, pp. 51–64)] showed the energy intake expressed as a basal metabolic rate, BMR (MJ). 5.40 5.67 5.79 6.85 6.92 5.70 6.08 5.48 5.44 5.51 a. Use a normal probability plot to check the normality assumption. b. Find a 99% two-sided confidence interval on the mean BMR.

Water availability is of prime importance in the life cycle of most reptiles. To determine the rate of evaporative water loss of a certain species of lizard at a particular desert site, 34 such lizards were randomly collected, weighed and placed under the appropriate experimental conditions. After 24 hours, each lizard was removed, weighed, and its total water loss was calculated by subtracting its body weight after treatment from its initial body weight. Previous studies have shown that the relative frequency distribution of water loss for this species of lizard has a mean of 3.1 grams and a s.d. of 0.8 gram b) What is the probability that x is less than 2.7 grams?