. The recovery rate for a disease is 0.4. In the study conducted on 30 randomly selected patients known to have this disease; a) What is the probability of recovery for 17 or more patients? b) What is the probability that more than 13 patients will recover?

Q: 16) Suppose 80% of all flights by an airline are on time. Out of a random sample of 50 flights: a)…

A: The random sample size of flights, The proportion of all flights by the airline that are on time,

Q: 5. A student plans to go sledding on the first snow day in December. The chance of snow on any given…

A: The given problem can be solved using the binomial distribution.  The formula of variance for…

Q: 2. In a factory that produces pieces of ready-made concrete, if the percentage of producing…

A: Given,n=5p=0.6q=1-p=1-0.6=0.4X=no.of defective piecesX~Binomial (n=5 , p=0.6)P(X=x)=nx px qn-x    ;…

Q: What is the probability that the sampling error would be less than or more than 1.5 seconds

A: Given:mean µ = 30standard deviation σ= 2sample size n = 16 Let x̄ represent the sample mean time,…

Q: 3) A test consist of 60 multiple-choice questions. Each question has four possible answers, one of…

A: The number of questions (n) is 60.

Q: Example: If 25 percent of all patients with high blood pressure have bad side effects from a certain…

A: The probability that a patient with hypertension may have negative side effects from a particular…

Q: b) For a random sample of size n = 49, and suppose the population is not normal, what can we say…

A:

Q: The data in the following table show the association between cigar smoking and death from cancer for…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Delivery times for shipments from a central warehouse are exponentially distributed with a mean of…

A: Given:Note that sample mean  follows a Normal distribution with

Q: 1)Suppose that you randomly draw one card from a deck of 52 cards. After writing down which card you…

A: The probability of drawing a diamond in a single draw is 13/52 (since there are 13 diamonds in a…

Q: A random sample of 250 undergraduate students from a large university was found to contain 67…

A:

Q: Now look at the variable DIFFERENCE in the data file “Fuel Efficiency.” If there is no difference…

A: Fill-Up No. Computer Driver Difference   1 41.5 36.5 5   2 50.7 44.2 6.5   3 36.6 37.2 -0.6…

Q: If a condition has a 30% prevalence, what is the expected number of cases in a random sample of 200?

A:

Q: A statistic is a random variable that depends only on the observed sample. True False

A: We have  Statistic: The function of sample.  i.e a random variable which depends on the sample

Q: Suppose a large consignment of televisions contained 11% defectives. If a sample of size 237 is…

A:

Q: Three items are drawn in randomly from a population of 7 items. The item drawn may be defective or…

A: Given, Three items are drawn in randomly from a population of 7 items. The item drawn may be…

Q: What is the probability of observing a z score greater than 3?

A: From the provided information, The z score is greater than 3. That is P (z > 3)

Q: Consider a population with 3 observations: 6, 10 and 12. You use simple random sampling without…

A: Given : Population size (N)=3 6 10 12 Sample size (n)=2

Q: 9. During an independent research, 2500 randomly selected people were interviewed whether they visit…

A: Given The data is as follows:Sample size, n=2500 Sample proportion, p=0.7

Q: Given a normal population with mean = 39 and variance = 16, what is the probability of obtaining an…

A:

Q: If 11% of the population has a certain illness , what is the expected number of ill people in a…

A:

Q: Suppose that 20% of all M&Ms are yellow.  We will choose a random sample of 11 M&Ms from this…

A: Let x follows binomial distribution with parameters n = 11 and p = 0.20   The pdf of binomial…

Q: If the probability of busy time from a mobile phone connection is p=0.04. To find out that 4…

A: Probability distribution describes all possible values that a random variable can take within the…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.