\( 1 \leftarrow \begin{array}{l}\text { The accompanying data represent the daily (for example, Monday to Tuesday) movement of Johnson \& Johnson (JNJ) stock for } 61 \\ \text { randomly selected trading days. "Up" means the stock price increased for the time period. "Down" means the stock price decreased (or } \\ \text { was unchanged) for the time period. Construct and interpret a } 95 \% \text { confidence interval for the proportion of days JNJ stock increases. } \\ \text { Find the upper and lower bounds for the view the trading data. } \\ \text { The lower bound of the confidence interval is } \square \text { and the upper bound is } \\ \text { (Round to three decimal places as needed.) }\end{array} \).

Assume that \( z \)-scores are normally distributed with a mean of 0 and a standard deviation of 1 . If \( P(-b<z<b)=0.7944 \), find \( b \). \( b=\square \) Submit Question

SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300 . An administrator at a college is interested in estimating the average SAT score of first-year students. If the administrator would like to limit the margin of error of the \( 96 \% \) confidence interval to 25 points, how many students should the administrator sample? Make sure to give a whole number answer.

Score on last try: 0 of 1 pts. See Details for more. \( > \) Next question Assume that \( z \)-scores are normally distributed with a mean of 0 and a standard deviation of 1 . If \( P(-b<z<b)=0.6956 \), find \( b \). Submit Question

5 The mean age for first 13 voters at Zwide Voting Station, is 40 and the standard deviation is 5. Comment by refering to the standard deviations on how the ages at Zwide Station compare to those at Dingiswayo Station.

\( n-1=35-1=34 \) \( p \)-value \( <0.01 \) - Step 6: Make a decision to reject or not reject the null hypothesis. Write in non-techni terms a final conclusion about the claim. 'd reject the nurl nypo thesis