Suppose that we investigate the effects of some drug on Alzheimer disease and the probability of each drug being effective is 10%. Calculate the following : The probability that we find the first effective drug in the first 10 experiments( each experiment is with a new drug). The probability that the first effective dug is the 5th one that we examine. Name the distribution.

The table below describes the number of students at a local college by sex and grade. The experiment is to randomly select one student from the population described in the table. What is the probability that the student selected is a freshman given he is a male? Enter your answer rounded correctly to two decimal places. Freshman Sophomore Junior Senior 1350 1150 900 1450 1450 1500 2800 2600 2400 Female 1400 800 2200 Male Total Total 4800 5200 10000

Question 4. At a busy shopping mall on Saturdays, the length of time it takes to find a parking space at 11 A.M. follows a normal distribution with a mean of five minutes and a standard deviation of two minutes. Find the probability that it takes seven minutes or more to find a parking space. What is the probability of finding a parking spot within one minute? How many minutes do the luckiest 25% of shoppers need to find a parking spot? How many minutes do the unluckiest 25% need to find a parking spot?

Five plants are operated by a garment manufacturer. They feel there is a fifteen percent chance for a strike at any one plant and the risk of a strike at one plant is independent of the risk of a strike at another plant. Let X be the number of plants of the garment manufacturer that strike.   Step 1 of 3 :   Compute the probability that 33 of the plants will strike. Round your answer to four decimal places, if necessary.

A variable of a finite population takes values 5, 7, or 8 and has the following frequency distribution:     5 7 8 frequency 25 40 60 Construct a probability histogram for variable X.

The following frequency table summarizes how many animals are surrendered to a local animal shelter daily.  Dogs 6 Cats 13 Rabbits 4 Birds 2 Using experimental probability, what is the probability that a cat will be surrendered tomorrow? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

Suppose the manager agrees to pay each employee a $50 bonus if they meet a certain goal. On a typical Saturday, the oil change facility will perform 40 oil changes between 10 AM and 12PM. Treating this as a random sample, there would be a 10% chance of the mean oil change time being at or below what value.

Please I only want the answer for d. & e.

The percentage of the general population that has each blood type is shown in the table below. Determine the probability distribution associated with these data. (Enter your answers to two decimal places.) Blood Type A B AB O Population, % 40 13 4 43 Probability

Suppose that 20.56% of all vehicles on the road get a fuel economy of at least 35 miles per gallon (MPG). You conduct an observational study on a stretch of road outside of campus and record the make and model of 727 vehicles over a month long period. What is the probability that greater than 21.1% of the cars you observed get at least 35 MPG? (please show how to plug this into a scientific calculator) Question 4 options: 1) 0.3593 2) 0.5000 3) <0.0001 4) -23.9437 5) 0.6407