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Suppose a population has a mean of 180 with a standard deviation of 30 pounds. Find the standard deviation of the sampling distribution of the sample means for sample size of 450
A sample of 60 Grade 11 students' ages was obtained to estimate the mean of all Grade 11 students. The sample mean is 16.4 years and the population standard deviation is 4. What is the point estimate for µ?
Sulfuryl chloride, SO2Cl2,decomposes when heated. SO2Cl2 (g) -----> SO2 (g) + Cl2 (g) In an Experiment, the initial concentration of SO2Cl2 was 0.024 mol/L. If the rate constant is 2.2 x 10^-5 s^-1, what is the concentration of SO2Cl2 after 2.5 hours?
We wish to estimate the mean serum indirect bilirubin level of 4 days old infants.the mean for the sample of 16 infants was found to be 5.98mg/100cc.assume the bilirubin levels in 4 days old infant are approximately normally distributed with a standard deviation of 3.5 mg/100cc.calculate the 90,95 and 99% confidence interval and compare the intervals?
In the length of of hospitalization study conducted by several cooperating hospitals,a random sample of 64 peptic ulcer patients was drawn from the list of all peptic ulcer ever admitted to the participating hospital and the length of hospitalization per admission was determined for each. The mean length of hospitalization was found to be 8.25 days.the population standard deviation is known to be 3 days.calculate the 90,95 and 99% confidence interval and compare the intervals.
A certain type of ochro seed germinates 75% of the time. A backyard farmer planted 6 seeds. What is the probability that more than 4 seeds germinate?
A satellite orbits Earth at an altitude of 356 kilometers above the planet's surface. Compute for its (a) radius (b) speed (c) orbital period. (ME=5.97x10^24 kg)
Determine the volume, in ml, of a 208.7-g sample of an alloy with density of 0.258 lb/in^3Two concentric spheres of diameters d1 = 0.8 m and d2 = 1.2 m, have surface temperatures T1 = 450 K and T2 = 300 K
respectively. If the surface emissivities are 0.5 and 0.05 respectively, determine the net radiation heat exchange between
the two spheres.
If the intensity of radiation emitted by a surface covered with lamp black (α = 0.96) in the normal direction is 1.85 x 103
W/m2
Sr. Calculate the temperature of the surface if it follows Lambert’s Cosine Law
#339914 on Dec 2023