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Given
1. E = 0.03, 0 =
o = 0.57,
90% confidence
2. E = 0.15, o = 1.2,
95% confidence
3. E = 0.05, o = 0.45,
99% confidence
n=
n=
n=
Solution and Answer
1. Determine the pH of a buffer prepared by adding 15 mL of 0.25 M acetic acid to 35 mL of 0.17 M sodium acetate. Given Ka for acetic acid = 1.7 x 10-5.
Activity 2: Maximum Error E
Activity 2: Maximum Error E
Assuming that the samples come from a normally distributed population, find
the maximum error E given the following:
Given
Solution and Answer
1.
n = 10, X= 28, s = 4.0,
90% confidence
2. n = 16, X= 50, s = 4.2,
95% confidence
3. n = 25, X= 92.8, s = 2.6,
99% confidence
Assuming that the samples come from a normally distributed population, find
the maximum error E given the following:
Given
Solution and Answer
1.
n = 10, X= 28, s = 4.0,
90% confidence
2. n = 16, X= 50, s = 4.2,
95% confidence
3. n = 25, X= 92.8, s = 2.6,
99% confidence
Suppose in a dice game, the person who rolls two dice wins if his rolls results in a pair of numbers whose sum is 7 or 11. In how many ways can he or she win
the random variable Y, representing the number of nuts in a chocolate bar has the following probability distribution. compute the mean. K= 0,1,2,3,4 P(K)= 1/10,3/10,3/10,2/10,1/10
A battery delivers 10 joules of energy to move 5 coulumbs of charge. What is the electromotive force between the terminals of the battery?
5. The frequency distribution shows the salaries in million for specific year of top 25ceo’s in United States. Find the mean, variance and standard deviation.
Class Boundaries Frequency
15.5-20.5 13
20.5-25.5 6
25.5-30.5 4
30.5-35.5 1
35.5-40.5 1
An improvised billiard ball is used in a local play where a 35 gram billiard ball resting in a corner is suddenly
hit by another 45 grams ball moving 0.5 m/s. After the collision, the 45 grams ball remains at rest while the
other ball moves away. Find the velocity of the ball moving away ?
between z= 0 and z =1.36
Six and a half seconds later
te sneed
sound n ar
away was the lightning bolt? (Ignore the travel time for the flash
#340153 on Dec 2023