3.51. How many landline telephone numbers are there with 7 digits such that: (a) the first digit is 6 and the other digits are different from 6 and different from each other, (b) the three initial digits are greater than 5 and the remaining $-$ are less than 6,

Q: 49. The following are the daily wages in rupees of 30 workers of a firm : 262 340 277 299 303 308…

A:

Q: that a sample of 8 contains (i) exactly 2 defective items (i) greater than or equal to 7 defective…

A: Given: Among the items produced in a factory 5% are defective, i.e., p=0.05%. n=8

Q: According to a census company, 7.1% of all babies bon are of low birth weight. An obstetrician…

A: H0 : p = 0.071 H1 : p > 0.071   Observed value of low birth = 28 Observed value of not low birth…

Q: Step 2 of 4 : Calculate the expected value for the number of visitors for the birds exhibit. Enter…

A: The claim of the test is that there is sufficient evidence to conclude that some exhibits are less…

Q: A survey of cars on a certain stretch of highway during morning commute hours showed that 70% had…

A: It is given that X denotes the number of occupants in a randomly chosen car.

Q: 2. How many female rabbits are required in the population for at least 13 offspring (R) to survive?

A: Given that R=13 Find F? R=3+(350F)/(F+625)

Q: The manager of the dairy section of a Superstore in Regina feels that at least 10% of the egg…

A: Given claim: At least 10% of the egg cartons have at least one broken egg. Null Hypothesis:…

Q: 21 10. The past records of a factory using quality control methods show that on the average 1…

A: We have been provide that on average 4 items are defective out of a batch of 100 which mean ,…

Q: Suppose that a fair coin is tossed five times independently. Let V be the number of tails obtained…

A: Hello! As you have posted 8 different questions, we are answering the first question (1). In case…

Q: The management of the local zoo wants to know if all of their animal exhibits are equally popular.…

A: The null and alternative hypotheses are as follows: H0: p1=p2=p3= p4= p5= p6= p7=1/7 H1:At least one…

Q: A social worker claimed that in a certain village 35% of girls still get married who are less than…

A: Given claim is the 35% of girls still get married who are less than 18 years old. Null Hypothesis:…

Q: #2. It is claimed that a new diet will reduce a person's weight by 4.5 kilograms, on average, in a…

A: To test:H0:D1 and D2 are identicalH1:D2 is shifted to right or left of D1

Q: 2. Suppose the numbers given bellow are the percentage of elligible voters who actually voted during…

A: Trimmed mean : Like the mean and median, a truncated mean or trimmed mean is a statistical measure…

Q: Claim: A minority of adults would erase all of their personal information online if they could. A…

A: Claim: A minority of adults would erase all of their personal information online if they could.

Q: 2. The following are the speeds (in km per hour) at which every fifth passenger car was timed at a…

A: Given: The data of speeds (in km per hour) at which every fifth passenger car was timed at a certain…

Q: A2. a. A company decided to distribute 5 identical computers among its employees. In how many…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: The management of the local zoo wants to know if all of their animal exhibits are equally popular.…

A: There are totally seven animal exhibits at the zoo. The probability of selecting any one of the…

Q: Suppose X-N(16,36 ) and Y~N(19,16 ) . If a sample o size 20 was selected from the X population and

A: Mean of sample mean of X = x̄ = 16 Variance  of x̄ = 36/20 = 1.8 standard deviation of sample mean…

Q: Is there a significant difference between age groups in math achievement? 1. Yes, p .05

A: If the p-value is less than 0.05 then there is a significant different between age groups in math…

Q: 10. Data from the FBI revealed that of all the people arrested in the U.S. in 2020, 73% of them were…

A: To find: a) The probability that someone who was arrested is not a juvenile b) The probability that…

Q: 2. The quality inspector of a certain factory states that 38 of outgoing products have major…

A:

Q: A group of 62 students was surveyed, and it was found that each of the students surveyed liked at…

A: Since you have posted a question with multiple subparts according to guildlines I will solve first…

Q: A second-stage smog alert has been called in a certain area of Los Angeles County in which there are…

A: If the sample size if fixed and the experiment drawn with replacement, the experiment follows…

Q: ur out of five Filipinos under the age of 30 eat rice for breakfast. If a ndom sample of 15 adults…

A: We have given that  Sample size n= 15  Success of probability = 4/5= 0.80 X~binomial ( n,p)

Q: From a box containing 4 defective and 5 non-defective items, how many samples of size 3 are…

A: (a) Determine the number of ways in a sample of size 3 can be drawn from with no restrictions. The…

Q: The New York Choral Society divides male singers up into four categories from highest voices to…

A: State the hypotheses. That is, there is no evidence that the variance of the heights of singers in…

Q: 7. How many planned to do at most ane of these activities?

A:

Q: 2. What is the size of the observed difference between the means for Groups A and C? (Subtract the…

A: It is given that Mean for group A = 2.000 Mean for group B = 2.250 Mean for group C = 6.500

Q: 10% of the people admitted to a hospital go into Intensive Care, with the remainder staying on a…

A: Let the total number of people admitted to the hospital be x .                Disclaimer: Since you…

Q: 6 The percentage of sugar in a popular brand of soft drink is given below. 34.2 33.6 33.8 34.7 33.1…

A: Provided data is ; 34.2  33.6  33.8   34.7  33.1  34.7  34.2  33.6  34.5   35     33.4  32.5   35.6…

Q: According to the Bureau of Transportation Statistics, on-time performance by the airlines is…

A:

Q: Consider a town with a population that is 10 percent black (and the remainder is white). Because…

A: Consider the given: a) Total cars observed at night = 20%​ of 5000=20100​ × 5000=1000Out of 20 black…

Q: The manager of the dairy section of a Superstore in Regina feels that at least 10% of the egg…

A: Given: n= 250 ,x= 40 p= 0.1 ,significance level(∝)= 0.05 p̂= 40 / 250

Q: A firm wishes to compare three workers performance and the required times by three workers to…

A: Given: Number of persons k= 3 n1=n2=n3=5 The significance level is taken as 0.05.

Q: Claim: A minority of adults would erase all of their personal information online if they could. A…

A: a. Let p denotes the population proportion adults that would erase their personal information. It is…

Q: The management of the local zoo wants to know if all of their animal exhibits are equally popular.…

A: State the hypotheses. Null hypothesis: Alternative hypothesis:

Q: rvey of 10 young adults with credit card debt of more than $2,000 showed they id an average of just…

A: a). First, we will calculate the mean. The formula and calculations for the mean is as follows:…

Q: 6) From historical data at a local restaurant indicate that 60% of the customers order coffee, 15%…

A: The Chi-square test is a non-parametric hypothesis test that is mainly used for the categorical…

Q: What proportion of 20% of defective items should a supervisor in the quality system of a plastic…

A: a) What proportion of 20% of defective items should a supervisor in the quality system of a plastic…

Q: 3-21. Out of a total number of 1,807 women who were interviewed for employment. in a Pextile factory…

A:

Q: 1. Students who are home-schooled often attend their local schools to participate in vario types of…

A:

Q: The management of the local zoo wants to know if all of their animal exhibits are equally popular.…

A: To test the hypothesis we will use chi square test fir goodness of fit .

Q: A market investigator returns the following data of 10000 people consulted : 8110 liked chocolates,…

A:

Q: Shuster (1991) describes an case involving the sale of cc packets of cocaine, of which actually be…

A: Solution

Q: 1. The quality control team of an auto-parts manufacturing company accounted that there are 7…

A: Given:Total models = 55000 per year7 defective model for every 1100 models

Q: The management of the local zoo wants to know if all of their animal exhibits are equally popular.…

A:

Q: 5. A psychologist at a private psychiatric hospital was asked to determine whether there was any…

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

Q: n a study of red/green color blindness, 700 men and 2100 women are randomly selected and tested.…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: Construct and interpret a 95% confidence interval for the proportion (p) of employees who are…

A: here given,   n = 200 sample mean of no of hour employee spend reading and writing work-related…

Q: 5. A health spa claims that a new exercise program will reduce a person 's waist size at least 2…

A: Confidence interval is a simpler and shorter way of testing the null hypothesis.