A city organizer needs to gauge the normal month to month private water use around there. He chose an irregular example of 37 families from the city, which gave the mean water use to be 3410.30 gallons over a one-month time frame. In light of prior information, the populace standard deviation of the month to month private water use in this city is 387.60 gallons. Make a 95 % certainty span for the normal month to month private water utilization for all families around here.

Round your responses to two decimal spots.

A study of 20 arbitrarily chose grown-up men showed that the interim they spend each week watching sports on TV is 10.58 hours with a standard deviation of 2.75 hours.

Accepting that the time spent each week watching sports on TV by all grown-up men is (around) typically disseminated, develop a 90 % certainty span for the populace mean, .

Round your responses to two decimal spots.

An example of 18 perceptions taken from a regularly disseminated populace delivered the accompanying information:

28.5 27.2 25.2 25.3 31.4 23.1 26.2 24.3 28.5

37.4 23.9 28.6 27.9 25.4 27.5 25.2 22.7 22.5

Round your responses to three decimal spots.

a. What is the point gauge of ?

x = Enter your answer; point gauge

b. Make a 90 % certainty stretch for .

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

c. What is the room for give and take of gauge for to some extent b?

In a study of 1010 wedded grown-ups, the members were posed the inquiry: Was a decent FICO rating significant while picking your life partner? 400 and 95 replied in the certifiable, while 515 replied in the negative. On the off chance that 5 of those reviewed were chosen aimlessly, what is the likelihood of the following? (Round your responses to four decimal spots.)

"6"

- a) None replied in the confirmed?

b) Exactly 3 replied in the confirmed?

c) More than 3 replied in the agreed?

d) At least 1 replied in the agreed?