Investigator predictions-fewer adults drink

Reference no: EM13102630

According to the U.S. Bureau of the Census, 75% of adults regularly drank alcohol in 1985. An investigator predicts that fewer adults drink now than drank then. A sample of 100 adults is asked about their current drinking habits; 67 report drinking, and 33 report not drinking.

a) What is X2obt?

b) What is (are) the df for this test?

c) What is X2cv?

d) What conclusion should be drawn from these results?

Reference no: EM13102630

Questions Cloud

Determine what is the percent yield of the reaction : Determine what is the percent yield of the reaction If 15.0 grams of Nitrogen and 2.00 grams Hydrogen react to produce 1.38 grams of Ammonia?

Why the 2s and 2p orbitals on hydrogen are degenerate : Determine why the 2s and 2p orbitals on Hydrogen are degenerate and they are not in the case of Lithium and calculate Kp at 5 degrees and enter your answer in scientific notation if delta H rxn= -128 kj/mol CH 3 OH,?

Computing the population mean : Compute the population mean, the population median, the population midrange, the population range, the population variance, the population standard deviation, and the population proportion of odd numbers. Verify the following results:

Determine which of the data is correct : Heated and allowed to expand against a constant pressure of 1.20 atm until its volume reaches twenty eight Litres. Now determine Which of the given data is correct?

Investigator predictions-fewer adults drink : According to the U.S. Bureau of the Census, 75% of adults regularly drank alcohol in 1985. An investigator predicts that fewer adults drink now than drank then.

Risk neutral probability and value of call option : A stock price is currently $100. Over each of the next two three-month periods it is expected to increase by 10% or fall by 10%. Consider a six-month European call option with a strike price of $105.

Explain measures health care to prevent malpractice claims : Explain some measures which health care professionals can take to prevent malpractice claims. Do you think that threat of the malpractice claim really affects.

Random variable-uniform distribution : A random variable Y is uniformly distributed over a range of 0 to 2*pi. Another random variable X is related to Y by X=cos(Y).

Determine what is the process : Determine What is the ? Ssys for the process?(if it is given the specific heat capacity for ethanol is 2.42 J/g K.) express your answer in units of J/K

User Account

All Pages