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Defects in a certain wire occur at the rate of one per 10 meter. Assume the defects have a Poisson distribution. What is the probability that: (a) a 20-meter wire has no defects? (b) a 20-meter wire has at most 2 defects?
A delivery man covers his assigned route by traveling 8m blocks West, 10.0m blocks North, and then 21m blocks East. Calculate his resultant displacement?
Question.1:
An adult has on average 5.4 liters of blood. Assume the variable is normally distributed and has a standard deviation of 0.4. Find the percentage of people who have less than 5.7 litres of blood in their system.
Question.2 :
The average annual salary for all U.S teachers is $ 48,675. Assume that the distribution is normal and the standard deviation is $ 4995. Find the probability that a randomly selected teacher earns:
(i) Between $36000 and $42000 a year.
(ii) More than 40,000 a year.
Question.3:
The average daily jail population in the U.S is 706,242. If the distribution is normal and the standard deviation is 52,145, find the probability that on a randomly selected day the jail population is:
(i) Greater than 750,000
(ii) More than 600,000 but not more than 700,000
Issue
ml put 25 of the aqueous solution of iodine concentration w / v 1% in suppressing the season, then added his 10ml of Alkrufum, requested the contents of the separating funnel for two minutes, and then separated organic from aqueous layer and then take 5ml from the water layer and Aoert solution Ayari sodium concentration M to thiosulphate 0.1 Vlzim him 1.8ml to reach the end of the calibration, the desired point:
1.ahsb percentage extraction.
2.ahsb concentration of iodine in the organic and aqueous phases after extraction destined for mol / l 3.ahsb coefficient distribution of iodine between the organic and aqueous phases at a temperature of the experiment.
Note: The atomic weight of iodine 1 = 126.9
A man starts with an initial velocity of 3.50 m/s and accelerates for a distance of 205 m over 28.7s. What is the acceleration of the man?
How many oxygen atoms are in 4.00 moles of glucose?
A car starts from rest as accelerated uniformly at a rate of 2m/s^2 for 6s .it then maintains the constant speed for 30s,the breaks are then apllied and vehicle uniformly retands to rest in 5s .find the maximum speed reached at the total distance covered.
1) A random sample is drawn from a population of known standard deviation 10. Construct a 90% confidence interval for the population mean based on the information given n = 36 𝑥 = 100
formula mass of NaOH
the partial pressure of oxygen(o2) in air at sea level is 21kPa .the henry of o2 constant in water at 20 degrees celcius is 0.0000136 M/kPa .calculate the molar concentration of o2 in the surface water of a mountain lake saturated with air at 20 degrees celcius and an atmospheric pressure of 88.3kPa.
#339914 on Dec 2023