Researchers around the world are trying to use the available data to come up with the BEST estimate of the fatality rate. Let's try a thought experiment (not necessarily based in reality). Let's say that researchers in Wuhan took a random sample of 1,000 cases and found that the sample proportion for the fatality rate was 1.4%. Calculate the standard deviation for the sample proportion (also called the standard error).​

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?