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Unit 6 - Section 9.1

Complete the state A (1)- 1) O confidence interval Compute the critical value Zara that corresponds to a 84%% level of confide (Round to two decimal places as needed.) ation Table (page 1) he margin of error is The number of individuals in the sample with the spec Construct a 90% confide beval of the population proportion using the given information x= 80. n = 200 Click here to view the table of critical values. The lower bound is _ (found to three decimal places as needed 3. Table of critical values Area le Each Tall ; The margin of error was 4 percentage points with 50% confidence. For parts (a) Firsugh (d) below, which represent a reasonable interpretsson of the survey resume (a) We are 90% confident 54% of acults in the country during the peri workers in industry were too low. Is the interpretation reasonable? A. The interpretation is reasonable C. The Interpretation is sawed The interpretation provides no naval stout me poisson entire ( D . The interpretation is fawed The interpretation suggests that this interval sets the standard for all the offer intervals, which is not true. 10) We are 86%% to 94%% confident 54%% of aduts in the country during the period of economic uncertainty felt wages paid to workers in industry were too low. the interpretation reasonable? A. The interpretation is reasonable. Oc. The Interpretation Is saved The Feetonmutual O D. The interpretation is flawed The interpretation indicates that the level of confidence is varying twats, which is not true. beseven wages perfo manat the interval from 0 50 10 0.58 irs in industry were too jo .58 contains the true proportion of adults in the cour Is the interpretation reasonable? The interpretation is flawed The interpretation provides no interval about the population proportion. D. The interpretation is flawed. The interpretation indicates that me level of confidence is varying which is not true. in son of samples of adults in the country during the period of economic uncertainty, the proportion O B. The interpretation is fawed. The interpretation indicates that the level of confidence is varying OD . The Interpretation is flawed. The interpretation suggests that this interval sets the standard for al the offer Intervals, which Is not true. "heinzwmgusto estimate the proportion of adults who have high-speed internet access. What size same she does not use any prior estimates? * Click the icon to view the table of criscal values (a) n=_ (Round up to the nearest interper. (Round up to the nearest inteper.) 4: Table of critical values ion Table (page 1) ce was too close to car? portions depend on me level of confidence, the can By how many times d crease the margin of error by a factor of 7? (Type a whole number) of error by a factor of What is the general relation ter of - Katrina wants to estimate the proportion of acuts who read at least 10 becks last year To do so, she corais a simple random. adults and constructs a 90%% confidence interval. Assuming bom Katrina and Matthew obtained the same point estimate. whose Whose estimate will have the smaller margin Ock