Suppose a simple random sample of size nequals45 is obtained from a population with muequals64 and sigmaequals14. (a) what must be true regarding the distribution of the population in order to use the normal model to compute probabilities regarding the sample mean? assuming the normal model can be used, describe the sampling distribution x overbar. (b) assuming the normal model can be used, determine p(x overbarless than68.1). (c) assuming the normal model can be used, determine p(x overbargreater than or equals66.3).

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

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.