confidence intervals

4m 3m 1. Finding the Area of a Nonstandard Shape Figure A Use Figure A to answer the question below. 13 m 5 m Find the area of the shaded portion in Figure A 13 m Are the answer in m, square m or cubic m 2. Calculate the Z score in a hypothesis test In the head-turning case study from Chapter 2, the hypotheses tested ware: HO: P=0.5 HA: p>0.5 Assume that 63, 1% of the 120 couples observed turned their heads to the right when kissing. The standard error is 0.044. Compute the Z score for this hypothesis test Round the answer to 2 decimal places Which of the following is the correct interpretation for the Z score? "The Z score gives the number of standard errors between the sample proportion and the null value " The Z score gives the percentile associated with the sample proportion, assurning the null hypothesis is true. C The Z score gives the number of percentage points between the sample proportion and the null value. The Z score tells us whether the sample proportion is above or below the null value but doesn't give any more information than that. 3. Calculate the Z score in a hypothesis test In the medical consultant case study from Chapter 2, the hypotheses tested were: HO: p=0.1 HA: P=0.1 Assume that 4.2% of the 55 clients of the consultant experienced complications. The standard error is 0.027. To calculate how many standard arros the sample proportion is from the null value compute the Z score for this hypothesis test. Round the answer to 2 decimal places