Find the minimum sample size needed to estimate the percentage of Democrats who have a sibling. Use a 0.1 margin of error, use a confidence level of 98%, and use the results from a prior Harris poll that gave a confidence interval of (0.44, 0.51) for the proportion of Democrats who have a sibling.

The minimum sample size is  

Step-by-step explanation:

From the question we are told that

   The confidence interval is

    The margin of error is  

Generally the sample  proportion can be mathematically evaluated as

Given that the confidence level is  98% then the level of significance can be mathematically evaluated as

Next we obtain the critical value of   from the normal distribution table  

   The value is

Generally the minimum sample size is evaluated as

the anwser is d) 75°

step-by-step explanation:

both the histogram and the stem and leaf plot will visually show how many shoppers were of various ages within each range of data.   the histogram does not give us the specific ages of these shoppers unlike the stem and leaf plot.a histogram does not give us a true range of the data because we do not know exactly how old the shoppers were. a stem and leaf plot will give exact ages, so we can determine the exact range along with all measures of center and the others measures of center.   with the histogram, we cannot find any of these.

step-by-step explanation: