Mathematics, 03.12.2019 04:31 kvngnick
In the past the average age of employees of a large corporation has been 40 years. recently, the company has been hiring older individuals. in order to determine whether there has been an increase in the average age of all the employees, a sample of 25 employees was selected. the average age in the sample was 45 years with a standard deviation of 5 years. assume the distribution of the population is normal let α= 0.5 a, state the null and the alterative hypothesis b, test to determine whether or not the mean age of all the employees is significantly more than 40 years.
Answers: 2
Mathematics, 21.06.2019 16:10
On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius
Answers: 2
Mathematics, 21.06.2019 18:40
A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days
Answers: 1
Mathematics, 21.06.2019 20:00
Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible
Answers: 1
In the past the average age of employees of a large corporation has been 40 years. recently, the com...
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