Mathematics, 16.07.2019 02:20 fuenzalida73

The length of human pregnancy is known to have mean length of 268 days. a random sample of 64 pregnant women was selected and it was found that the average pregnancy length in that sample was 266 days.
which of the following is a true statement about this scenario?
1. if a different random sample of 64 pregnant women were selected, the average pregnancy length in that sample would have to be also 266 days.
2. both 268 and 266 are parameters
3. both 268 and 266 are statistics
4. 268 is a parameter and 266 is a statistic
5. the recorded sample average of 266 days is clearly a mistake. it must be 268 days just like the population mean.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 17:00

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?

Answers: 1

Answer

Mathematics, 21.06.2019 19:40

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Answers: 1

Answer

Mathematics, 21.06.2019 22:30

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

Answers: 1

Answer

Mathematics, 21.06.2019 23:00

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?

Answers: 1

Answer

You know the right answer?

The length of human pregnancy is known to have mean length of 268 days. a random sample of 64 pregna...

Questions

Mathematics, 25.02.2021 01:20

The graph of y= f(x) is the solid black graph below. Which function represents the dotted graph? Please help, will give brainlist if correct