The lifetime (in days) of a certain electronic component that operates in a high-temperature environment is lognormally distributed with μ = 1.9 and σ = 0.4.   Find the 90th percentile of the lifetimes. Round the answer to two decimal places.

Use the data in the accompanying table to find the logarithmic regression equation to the nearest tenth

What happens visually when SSE goes to zero and SSE goes to SST in statistics

I only need B,C, and D

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A light fixture contains five lightbulbs. The lifetime of each bulb is exponentially distributed with mean 199.0 hours. Whenever a bulb burns out, it is replaced. Let T be the time of the first bulb replacement. Let X1, i = 1, . . . , 5, be the lifetimes of the five bulbs. Assume the lifetimes of the bulbs are independent.   1. Find P( X1 > 100). (Round the final answer to four decimal places.) 2. Find P( X1 > 100 and   X2 > 100 and • • • and   X5 > 100). (Round the final answer to four decimal places.) 3. Find P(T ≤ 100). (Round the final answer to four decimal places.) 4. Let t be any positive number. Find P(T ≤ t), which is the cumulative distribution function of T. 5. Find the mean of T. (Round the final answer to two decimal places.)

You are given the following data: X= [1.5, 10.22, 2.4, 5.8, 0.43] What would you choose as the parameter if you were to model this as fe a lognormal distribution? (Enter your answer with up to two digits after the decimal point).

Find the logarithm. log, (64) =

The length of a stalactite (in mm) has been measured at the beginning of every fourth year since the year 2000. The data through 2016 is shown below, where t is in years after the beginning of the year 2000. t Length (mm) 0 88 с Use the data to construct a scatter plot, then complete the following. 1) Which of the following best describes the pattern? O A. Linear (y = mx + b) O B. Logistic y= (y= OC. Exponential (y = a.b*) ₂-bx 4 93 1 + ae 8 99 2) Using your calculator and the best of the four methods above, find a model, L(t), that estimates the length of the stalactite t years after 2000. ROUND TO TWO DECIMAL PLACES. L(t) = 3) Use your rounded answer from part 2 to complete the following. ROUND TO TWO DECIMAL PLACES. Acording to the model, at the beginning of the year 2007, the stalactite was approximately mm long, and it was growing at a rate of approximately 12 103 mm per year. 16 108

An assortment of 100 fish is put into a fish tank; the fish population grows at a continuous rate of 23% per hour. How long until the population doubles in size? (round to the nearest fish)