A scholar discovered the wingspans of a gathering of monary butterflies to be typically appropriated with a mean of 52.7 mm and a standard deviation of 2.9 mm. What percent of the butterflies had the accompanying wingspans? (Round your responses to one decimal spot.)

(a) under 48.6 mm

_______ %

(b) somewhere in the range of 50 and 56 mm

_______ %

A specialist needed to know the level of judges who are agreeable to capital punishment. He took an arbitrary example of 15 appointed authorities and found out if they favor capital punishment. The reactions of these adjudicators are given here.

Yes No Yes Yes No

Yes No No No No

Yes Yes Yes No Yes

a. What is the point gauge of the populace extent?

Round your response to three decimal spots.

p ^ = Enter your answer; point gauge

b. Build a 90 % certainty span for the level of all appointed authorities who are agreeable to capital punishment.

Round your responses for the certainty stretch to three decimal spots, and your responses for the rate certainty span to one decimal spots.

As per a Pew Research Center cross country phone study of grown-ups directed March 15 to April 24, 2011, 69 % of school graduates said that their advanced degree gave them development (Time, May 30, 2011). Assume that this overview included n = 1440 school graduates.

a. What is the point gauge of the relating populace extent?

p ^ = Enter your answer; point gauge

b. Develop a 97 % certainty span for the extent of all school graduates who will say that their advanced degree gave them development. What is the safety buffer for this gauge?

Round your responses to three decimal spots.

The standard deviation for a populace is =14.8. An example of 21 perceptions chose from this populace gave a mean equivalent to 139.05. The populace is known to have an ordinary circulation.

"7"

Round your responses to two decimal spots.

a. Make a 99% certainty stretch for .

( Enter your answer; 99% certainty stretch, lower bound ,Enter your answer; 99% certainty span, upper bound )

b. Build a 97% certainty stretch for .

( Enter your answer; 97% certainty stretch, lower bound ,Enter your answer; 97% certainty span, upper bound )

c. Decide a 95% certainty span for .

( Enter your answer; 95% certainty span, lower bound ,Enter your answer; 95% certainty stretch, upper bound )