Two separate marketing teams, Team A and Team B, have each designed a 30 second advertisement for the new Cloak

soft drink. The manager of marketing is interested to see if there is any difference between the effectiveness of the two ads.

A random sample of 50 people are shown the ad from Team A and asked if they would definitely buy the new drink. In this sample, 26 people said that they would. A second random sample of 50 people are shown the ad from Team B and asked if they would definitely buy the drink. In this sample, 10 people said that they would.

Let ₁ denote the population proportion of people that would definitely buy the drink if they saw the ad from Team A. Let ₂ denote the population proportion of people that would definitely buy the drink if they saw the ad from Team B.

A hypothesis test is conducted with the following hypotheses:

H₀: ₁ = ₂

H_A: ₁ ≠ ₂

The level of significance used in this test is 0.05. You may find this standard normal table useful.

a)Calculate the test statistic (z) for this test. Give your answer to 2 decimal places.

z = 

b)In this test the null hypothesis isis not rejected.

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