It is known that the standard deviation of the population

Assignment Help Basic Statistics

Reference no: EM13621046

1. The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed a sample mean price of $210,000. It is known that the standard deviation of the population is $36,000. Using a 1% level of significance, test to determine if there has been a significant decrease in the average price homes. Use the p value approach. Make sure to show all parts of the test, including hypotheses, test statistic, decision rule, decision and conclusion.

2. A sample of 30 cookies is taken to test the claim that each cookie contains an average of at least 9 chocolate chips. The average number of chocolate chips per cookie in the sample was 7.8 with a sample standard deviation of 3. Using a 5% level of significance, perform the hypothesis test using the critical value approach. Show all parts of the test, including hypotheses, test statistic, decision rule, decision and conclusion.

Reference no: EM13621046

Questions Cloud

Water vapor initially at 30 mpa and 300oc state 1 is : water vapor initially at 3.0 mpa and 300oc state 1 is contained within a piston-cylinder assembly. the water is cooled

A 10 atmospheric dump valve adv at a pwr relieves steam at : a 10 atmospheric dump valve adv at a pwr relieves steam at 1100 psia when the enthalpy required to make a pound of

The bright yellow sodium line in the sodium spectrum is : the bright yellow sodium line in the sodium spectrum is actually a pair of closely spaced lines at 589.0nm and 589.6

A 24 mw laser beam has its electric field vertical if it : a 2.4 mw laser beam has its electric field vertical. if it passes through a polarizer with its transmission axis at 30

It is known that the standard deviation of the population : 1. the average price of homes sold in the u.s. in the past year was 220000. a random sample of 81 homes sold this year

An ac generator which produces an rms voltage of 120 v at : an a.c. generator which produces an rms voltage of 120 v at 60 hz is connected to a 57 microf capacitor. there are no

Suppose that x represents a single observation from the : suppose that x represents a single observation from the distn given by fx theta thetaxtheta - 1 for 0 lt x lt 1find

The average monthly rent for a one-bedroom home in san : the average monthly rent for a one-bedroom home in san francisco is 1429. a random sample of 20 one-bedroom homes about

What total number of replications is required to increase : you obtain the average delay in queue minutes for 8 independent replications of a simulation model of a popular ride at

User Account

All Pages