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MATH SOLVE
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The light intensity I (in lumens) at a depth of x feet in Lake Elizabeth is given by the formula log (StartFraction Upper I Over 12 EndFraction )equals negative 0.025 x . a. Find the light intensity at a depth of 24 feet. b. At what depth is the light intensity 7 lumens?
General
2 months ago
(b) The five number summary for the number of circuits for those describing the high-quality site is (0, 7.5, 80, 122.5, 440), while the five number summary for those describing the low-quality site is (0, 0, 0, 42.5, 185). Use the IQR method to identify any outliers in either group. Justify your answer.
General
2 months ago
4) You are in Las Vegas and need $35 to buy a great steak dinner, but you only have $20. You decide to play roulette to win the money you need for your dinner. In the simplest bet in roulette, you bet $1 on one of 38 numbers and if your number comes up on the wheel you win $35. If any other number comes up, you lose. a) If you bet $1 on each of 20 different numbers on one single spin of the wheel, what is the probability that you will have $35 after your bet?
General
2 months ago
Quality control is an important issue at ACME Company which manufacturers light bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled nine light bulbs and measured how many hours they lasted: 378, 361, 350, 375, 200, 391, 375, 368, and 321. What is the Variance?
General
2 months ago
A car dealership has five exterior color choices, six interior color choices, and two model choices. How many different ways could you choose a car?
General
2 months ago
Eliana plans to visit the fair. She must pay $5 to enter the fairgrounds and an additional $3 per ride. Write an equation to show the relationship between r, the number of rides, and t, the total cost in dollars. State which variable is dependent and which is independent. Then, create a graph that models the equation.
General
2 months ago
Randomly split the messages into a training set D1 (80% of messages) and a testing set D2 (20% of messages). Calculate the testing accuracy, confusion matrix, precision, recall, and F-score of the Na¨ıve Bayes classifier in determining whether a message is spam or ham. Submit your source code. Note: Let’s assume that spam is the positive class
General
2 months ago
f the probability of an event occurring is 0, then it is impossible for that event to occur. B. If the probability of an event occurring is 1.5, then it is certain that event will occur. C. If P(A)equals0, then the probability of the complement of A is 1. D. Probability can never be a negative value.
General
2 months ago
Can someone help me the 2nd problem I don’t understand it
General
2 months ago
There is 4.8% sales tax on all clothing items purchased. Danielle wants to buy a shirt, which costs $18.95. Danielle figures that if she has $20 she will have enough to buy the shirt. After adding in sales tax, is $20 a reasonable amount for Danielle to bring?
General
2 months ago
4.8.4 Raw materials are studied for contamination. Suppose that the number of particles of contamination per pound of material is a Poisson random variable with a mean of 0.02 particle per pound. Round the answers to the nearest integer. (a) What is the expected number of pounds of material required to obtain 14 particles of contamination? Enter your answer in accordance to the item a) of the question statement (b) What is the standard deviation of the pounds of materials required to obtain 14 particles of contamination?
General
2 months ago
40 pts! and brainliest Submarine A is positioned at –1,100 feet in relation to sea level. Submarine B is positioned at –800 feet in relation to sea level. Each submarine needs to be 200 feet below sea level in 30 minutes. Which compares the speeds at which each submarine needs to travel?Submarine A must travel at a rate of (blank) ft/min, and Submarine B must travel at a rate of (blank) ft/min.
General
2 months ago
a bank manager wants to know the mean amount of mortgage paid per month by homeowners in an area. a random sample of 120 homeowners from this area showed that they pay an average of $1575 per month for their mortgages. the population standard deviation of such mortgages is $215. fins a 97% confidence interval for the mean amount of mortgage paid per month by all homeowners in this area.
General
2 months ago
The function below represents the annual interest Alexander earns on a savings account. Identify the term that represents the amount of time that the money is accruing interest. f(x) = 500(1 + 0.02)x 500 1 0.02 x
General
2 months ago
How do I solve this equation?2^(x)+3^(x)=13I know that the answer is x=2 but what are the ways of solving this type of problem? Please show all your work, thanks.
General
2 months ago
11 The sides of two similar triangle are in a ratio of 5:6. The area of the larger triangle is 108.Find the area of the smaller triangle. (1 point)
General
2 months ago
Find the margin of error for a poll, assuming that 95% confidence level and π = 0.5.(a) n = 50 (Round your answer to 4 decimal places.) Margin of error________.(b) n = 200 (Round your answer to 4 decimal places.) Margin of error________.(c) n = 500 (Round your answer to 4 decimal places.) Margin of error________.(d) n = 2,000 (Round your answer to 4 decimal places.) Margin of error________.
General
2 months ago
11. Refer to the rectangle at the right. Suppose the side lengthsare doubled.a. Find the percent of change in the perimeter.b. Find the percent of change in the area.What’s the answer?
General
2 months ago
16. A company collected funds for charity from employees. The amount donated by some employees on the first day is asfollows:$10, $20, $15, $100, $10, $15, $10Which measure of central tendency best represents the data? Justify your selection and then find the measure of centraltendency(SHOW WORK)
General
2 months ago
A Snapshot in USA Today indicates that 51% of Americans say the average person is not very considerate of others when talking on a cellphone. Suppose that 100 Americans are randomly selected. Find the approximate probability that 64 or more Americans would indicate that the average person is not very considerate of others when talking on a cellphone.
General
2 months ago
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