The recommended dietary allowance (RDA) of iron for adult females under the age of 51 is 18 milligrams (mg) per day. The following iron intakes, in milligrams, were
obtained during a 24-hour period for 45 randomly selected adult females under the age
of 51.
15.0 18.1 14.4 14.6 10.9 18.1 18.2 18.3 15.0
16.0 12.6 16.6 20.7 19.8 11.6 12.8 15.6 11.0
15.3 9.4 19.5 18.3 14.5 16.6 11.5 16.4 12.5
14.6 11.9 12.5 18.6 13.1 12.1 10.7 17.3 12.4
17.0 6.3 16.8 12.5 16.3 14.7 12.7 16.3 11.5
At the 1% significance level, do the data suggest that adult females under the age of 51
are, on average, getting less than the RDA of 18 mg of iron? Assume that the population
standard deviation is 4.3 mg.

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.

Patty made a name tag in the shape of a parallelogram. reilly made a rectangular name tag with the same base and height. explain how the areas of the name tags compare.

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?