A neurological study found that monozygotic twins share numerous physical, psychological, and pathological traits. The researchers measured intelligence scores of 10 pairs of twins. The twins are distinguished by birth order. Assume Normality.

a) Show all steps (including how to find cutoff value) and construct a two-sided 95% Confidence Interval for the true mean difference.

(b) Figure out to the nearest whole percent what confidence level you would need to decrease to obtain a confidence width (error) of about 0.22 for the true mean difference in this prob

BornFirst BornSecond
6.08 5.73
6.22 5.8
7.99 8.42
7.44 6.48
6.48 6.43
7.99 8.76
6.32 6.32
7.6 7.62
6.03 6.59
7.52 7.67

Classify each polynomial by its degree and by its number of terms.

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.

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.