What is the purpose of a sand pit in a degu enclosure?
What will be an ideal response?
Degus urinate in the sand and roll in it, covering themselves with the group scent. It is also used for hierarchal reinforcement.
You might also like to view...
The process of ice making usually occurs in which temperature range?
A. -10°F to 0°F B. 0°F to 5°F C. 5°F to 20°F D. 20°F to 30°F
The external covering of the penis is called the sheath or ____________________
Fill in the blank(s) with correct word
The dimension that extends from the center of the arc to the circumference is:
A. The arc length B. The diameter C. The radius D. Never shown on a drawing
In a sample of 80 light bulbs, the mean lifetime was 1217 hours with a standard deviation of 52 hours.
a. Find a 95% confidence interval for the mean lifetime of this type of light bulb. b. Find a 98% confidence interval for the mean lifetime of this type of light bulb. c. An engineer claims that the mean lifetime is between 1208 and 1226 hours. With what level of confidence can this statement be made? d. How many light bulbs must be sampled so that a 95% confidence interval will specify the mean lifetime to within ±8 hours? e. How many light bulbs must be sampled so that a 98% confidence interval will specify the mean lifetime to within ±8 hours?