A simple random sample of 41 cities and counties in the United States was selected and...
A simple random sample of 41 cities and counties in the United States was selected and the number of positive COVID-19 cases per 1000 citizens was recorded for each. The mean number of positive cases for this sample of 41 counties and cities was 261, with a standard deviation of 9.5. Due to a couple of cities with extremely high numbers of cases the distribution is skewed heavily to the right. If appropriate, use this information to calculate and interpret...
A simple random sample of 101 cities and counties in the United States was selected and the number of positive COVID-19 cases per 1000 citizens was recorded for each. The mean number of positive cases for this sample of 101 counties and cities was 253, with a standard deviation of 11.4. Use this information to calculate and interpret a 99% confidence interval for the mean number of positive COVID-19 cases per 1000 citizens for all counties and cities in the...
College tuition: a simple random sample of 35 colleges and universities in the united states has a mean tuition of $19,400 with a standard deviation of $10,700. Construct a 95% confidence interval for the mean tuition for all colleges and universities in the United States. round the answers to the nearest whole number. A 95% confidence interval for the mean tuition for all colleges and universities is __________________< mean < _____________________
College tuition: A simple random sample of 35 colleges and universities in the United States has a mean tuition of $17,600 with a standard deviation of $10,200. Construct a 90% confidence interval for the mean tuition for all colleges and universities in the United States. Round the answers to the nearest whole number. A 90% confidence interval for the mean tuition for all colleges and universities is h
The distribution of ages of females in the United States is strongly skewed to the left with a mean of 80.2 years. A random sample of n 20 females is taken from this population and the mean age of the sample is calculated. This is repeated 500 times. Which one of the following best describes the shape of the sampling distribution? 20. Cannot be determined because the standard deviation is unknown. Skewed to the left with a mean of (A)...