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jo-ann owns jewerly store. She used 150 pairs of earrings as her sample of the different design. The population standard deviation of the price of the earrings is 65 pesos. suppose that jo-ann wants a 98% level of confidence to determine the mean of price all her earrings she is selling. Compute for length of the confidence retrival
A population consists of the numbers 4,7,10,11,and 13. Construct a sampling distribution to table and compute the mean of each sample.
Fine the altitude and the area of an equilateral triangle whose side is 60+60+60=180
Find the corresponding area between z=0 and each of the following:
a) z=0.96
b) z=1.74
c) z=2.18
d) z=2.69
e) z=3.00
First Law of Thermodynamics and Calorimetry (5 points each)
A gas system with constant pressure has change in internal energy of 240 J. Heat was lost to the surroundings and 150 J work was done to the surroundings as well. How many calories of heat was lost?
315 moles of butane (C4H10) was burned in a copper calorimeter containing 5065 g of water. The calorimeter weighs 2,800 g. The temperature was observed to increased by 3.15 °C. Calculate the molar heat of combustion of butane. The specific heat of copper and water are 0.386 J/g. °C and 4.18 J/g. °C respectively.
A 60-g silver spoon (specific heat 0.233 J/g °C) at 25 °C is placed in 180 g of coffee at 85 °C and the temperature of the two become equal. What is the final temperature when the two become equal? The coffee has specific heat of 5.12J/g. °C.
Supposed two air fryers are tested. Let D be the random variable representing the number of defecting air fryers that occur. Find the values of random variable D. Make a table showing the possible outcomes with its corresponding values for the random variable D.
Sample 3 cards are drawn without replacement from a population of five cards numbered 2 to 6
How many possible samples can be drawn?
List all the possible samples and compute the mean of each sample.
Construct the sampling distribution sample means.
show that p ↔ q and (p^q) v (¬p^¬q) are logical equivalent
1:The average amount of miles a car battery lasts for in a 2019 sedan is 37,452 miles with a standard deviation of
4,890 miles. If this distribution is normally distributed, answer the following questions:
A: What is the probability you select a battery it last longer than 40,000 miles?
B: What is the probability you select a battery, and it lasts between 32,000 miles and 44,000 miles?
C: Where does the top 18% of longest lasting batteries begin (at what mileage)?
Test whether the series ∞Σn=0 1/(n^5+x^3) converges uniformly or not
#339914 on Dec 2023