The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 258.6 and a standard deviation of 69.4. (All units are 1000 cells/muL.) Using the empirical rule, find each approximate percentage below. a.
What is the approximate percentage of women with platelet counts within 2 standard deviations of the mean, or between 119.8 and 397.4?
b.
What is the approximate percentage of women with platelet counts between 50.4 and 466.8?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

What is not true about kl and mn? what is mn? (show )

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.