Answer: 2/3
Step-by-step explanation:
First, find the probability of rolling an odd number. The odd numbers on a 6-sided die are 1, 3, and 5. This is a probability of 3/6.
Now, find the probability of rolling a 2. There's only one 2 on a die, so the probability is 1/6.
Next, add these together. 3/6 + 1/6 = 4/6. This can be reduced by dividing both the numerator and denominator by 2. This results in a final probability of 2/3.
Answer: a 46.79 pens
Step-by-step explanation: trust me
Using the t-distribution, it is found that the 95% confidence interval for the population mean rating for Miami is (5.73, 6.95).
<h3>What is a t-distribution confidence interval?</h3>
The confidence interval is:
In which:
- is the sample mean.
- s is the standard deviation for the sample.
The critical value, using a t-distribution calculator, for a <u>two-tailed 95% confidence interval</u>, with 50 - 1 = <u>49 df</u>, is t = 2.0096.
Considering the given sample, the other parameters are given as follows:
Hence, the bounds of the interval are:
More can be learned about the t-distribution at brainly.com/question/16162795
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Answer:
1.2 hours
(this is equivalent to 1 hr, 12 min; also equivalent to 72 min)
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Work Shown:
x = time it takes Sydelle to do full job on her own
y = time it takes Marques to do full job on his own
z = time it takes to do full job if both work together
In this case,
x = 2
y = 3
z = unknown
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1/x + 1/y = 1/z
1/2 + 1/3 = 1/z
3/6 + 2/6 = 1/z
5/6 = 1/z
5*z = 6*1 ... cross multiply
5z = 6
5z/5 = 6/5 ..... divide both sides by 5
z = 6/5
z = 1.2 hours is the amount of time it takes if they work together. This is assuming that one worker does not slow down the other.
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Extra info:
1.2 hours = 1 hour + 0.2 hrs
1.2 hours = 1 hour + (0.2*60 min)
1.2 hours = 1 hour + 12 min
1.2 hours = 1 hour, 12 min
1.2 hours = 60 min + 12 min
1.2 hours = 72 min