Answer:
a) We can be 95% sure that true average age (in weeks) at which babies begin to crawl is between 30.65 weeks and 32.89 weeks.
b) Margin of error for the confidence interval is 1.12 weeks.
Step-by-step explanation:
Let m be the estimate of the average age (in weeks) at which babies begin to crawl
Let ME be the margin of error.
- Lower bound of the confidence interval is m-ME (32.89 weeks)
- Upper bound of the confidence interval is m+ME (30.65 weeks)
then the <em>difference</em> between the upper bound and the lower bound gives:
m+ME - (m-ME) = 2ME = 32.89-30.65=2.24 which gives
ME=1.12 weeks
Answer:
a=-7.275*967
Step-by-step explanation:
Answer:
the answer will be 6 centimeter
The answer would be choice c.
hoped this helped
happy studying
63,360 in are in a mile.
you cant convert that into a mile. you'd have to find the fraction. you do not have enough inches to make a mile.<span />