Find the probability that the mean of that sample
The weights of men are normally distributed with mean of 173 lb and a SD of 30 lb. Suppose we choose a random sample of 32 men. Find the probability that the mean of that sample will exceed 181.25 lb.
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A string with a mass of 27 g and a length of 2 m is stretched under a tension of 68 N. How much power must be supplied to the string to generate a traveling wave that has a frequency of 48 Hz and an amplitude of 4 cm?
When an opinion poll calls residential telephone numbers at random, only 20% of the calls reach a live person. You watch the random dialing machine make calls. X is the number of calls until the first live person answers. Does X have a binomial di
A string is 33.5 cm long and has a mass per unit length of 5.70 10-4 kg/m. What tension must be applied to the string so that it vibrates at the fundamental frequency of 708 Hz?
A survey revealed that men spend an average of 11.4 min in the shower with standard deviation of 1.8 min. Assume a normal distribution. If 33 men are randomly selected find the probability that their shower times have a mean between 11.0 min and 1
A game consists of tossing disks onto a table marked in squares of side a. If the disk does not touch any line or edge, the player wins. It is assumed that the player can at least hit the table.
A vector force with components (1,2,5) acts at the point (3,2,1) a) Find the vector torque about the origin due to this force
Assume the population proportion is 0.17 and a simple random sample of 850 households will be selected from the population. What is the probability that the sample proportion will be within ±0.02 of the population proportion?
A steam turbine operates with 1.6 Mpa and 350 degree c steam at its inlet and saturated vapor at 30 degree c at its exit. the mass flow rate of the steam is 16 kg/s,and the turbine produces 9000kW of power.
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