Question

2. Identify the population, the parameter of interest, the sample, and the statistic in each of the following settings – use correct notation if necessary:
a. The Gallup poll asked a random sample of 515 U.S. adults whether or not they believe in UFO’s. Of the respondents, 160 said “YES”.



b. During the winter months the temperature outside the Ridpath’s cabin at Lake Tahoe can stay well below freezing (32 degrees Fahrenheit, 0 degrees Celsius) for weeks at a time. To prevent the pipes from freezing Mrs. Ridpath sets the thermostat at 50 degrees Fahrenheit. She wants to know how low t

Answer 1

She wants to know how low the temperature actually gets in the cabin. A digital thermometer records the indoor temperature at 20 randomly chosen times during the day. The average reading in the sample is 48 degrees Fahrenheit.




c. How much do gasoline prices vary in a large city? To find out, a reporter records the price per gallon of gasoline at a random sample of 10 gas stations in the city on the same day. The standard deviation of prices in the sample is 5.2 cents.

Answer 2

@Nnesha

Answer 3

@agent0smith @radar

Answer 4

2. Identify the population, the parameter of interest, the sample, and the statistic in each of the following settings – use correct notation if necessary:
a. The Gallup poll asked a random sample of 515 U.S. adults whether or not they believe in UFO’s. Of the respondents, 160 said “YES”.

Population - all US adults
Sample ... should be obvious
Parameter - i guess the proportion of population that believes in UFOs
Statistic - proportion of sample that believes in UFOs