Test of hypothesis for difference between proportions

Reference no: EM13113419

To market a new white wine, a winemaker decides to use two different advertising agencies one operating in the East and one in the West. After the white wine has been on the market for 8 months, independent random samples of wine drinkers are taken from each of the two regions and questioned concerning their white wine preference. Is there evidence that the proportion of wine drinkers in the West who prefer the new white wine is larger than the corresponding proportion of wine drinkers in the East? Test at a significance level alpha (a) = .02. State the null and alternate hypothesis. Determine the rejection region.

EAST WEST
NUMBER OF WINE DRINKERS SAMPLED 516 438
NUMBER SAMPLED WHO PREFER NEW WHITE WINE 18 23

Reference no: EM13113419

Questions Cloud

Hypothesis testing for difference means : For one consumer product the mean dollar sales per retail outlet last year in a sample of 15 was $3,425 with a standard deviation of $500. For a second product the mean dollar sales per outlet in a sample of 12 stores was $3,250 with a standard de..

What is the mass of silver chloride is required : Silver chloride contains 75.27% Ag.what is the mass of silver chloride required to plate 205 of pure silver.

Effect of birth control pills on exercise capacity : A physiologist wishes to study the effect of birth control pills on exercise capacity. Five female subjects who have never taken the pill have their maximal oxygen uptake measured during a treadmill session.

What proportion of player-s serves are between given range : The information that the distribution of the serve speeds was bell shaped. What proportion of the player's serves are expected to be between 107 mph and 118 mph?

Test of hypothesis for difference between proportions : To market a new white wine, a winemaker decides to use two different advertising agencies one operating in the East and one in the West. After the white wine has been on the market for 8 months, independent random samples of wine drinkers are take..

What is the mass of glucose in 362 ml of the solution : A 5.00 % m/m glucose solution has d = 1.02 g/mL. What is the mass of glucose in 362 mL of the solution.

Determining significance level and p-value : She decided to investigate and gather the following sample information. Would it be reasonable for her to conclude that union nurses earn more? Use the .02 significance level. What is the p value?

What is the thickness of the resulting sio2 wafer : A 100 mm diameter silicon wafer is oxidized completely. What is the thickness of the resulting SiO2 wafer? The molecular weight of Si is 28 g/mol and of SiO2 is 60 g/mol.

Determine what percent of the scores lie between range : The mean SAT verbal score is 412, with a standard deviation of 90. Use the Empirical Rule to determine what percent of the scores lie between 412 and 592.

User Account

All Pages