A company has over 4,000 employees. In past surveys, 85% of their employees stated they were satisfied working for the company. The CEO suspects that the proportion of satisfied employees has recently decreased. A random sample of 350 employees was taken, and 287 reported that they were satisfied. Is there enough evidence to suggest a decrease in satisfaction? H0: p = 0.85

Ha: p < 0.85

p = The true proportion of all employees who are satisfied working for the company

Identify the following values that will be used to calculate our test statistic:

p hat =

p0 =

n =

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3

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.

What are the solutions of the equation x4 – 5x2 – 14 = 0? use factoring to solve. someone !