Search & Filtering
Based from the results of a survey conducted by a group of researchers, the proportion of feinales holding executive positions in the government agencies in a certain populated city in the Philippines is normally distributed, in a random sample of 300 female employees in government agencies, 75 female employees hold executive positions.
1. Compute the proportion estimate of the parameter.
2. Compute the standard error of the proportion.
3. Compute the margin of error of the proportion at 90% confidence level.
4. Find 90% and 95% confidence interval for all the female employees in the government agencies holding executive positions.
ticket booking programming;--Developer needs to input the following from the console using programming to book ticket for a passenger:
-passenger id:a 7 digit number for passenger id for whom booking is to be done.
-pnr no:a string field for pnr no with a default 7 digit number.
-travel date:a string field to enter the journey date in format(dd/mm/yyyy).
-source:a string field to capture the source airport.
-destination:a string field to capture the destination airport.
-status:a string field to select among following values new/confirm/hold.
-seat preference:a string field to select among following values,middle,aisle.
-meal preference:a string field to select among following values.
**once all fields are taken input,booking details need to be inserted in array/list/appropriate collection.after successful booking,a booking acknowledgment message need to be displayed on the console as "ticket booked successfully,Happy Journey...".
Problem: A marketing researcher randomly selects 20 female students in a certain university and found out that their
average monthly expenditures for their cell phone loads is Php 500.00 with a standard deviation of Php75.00
a. Find the 99% confidence interval for the average expenditures of female students for their cell phone loads.
b. Find the 90% confidence interval for the average expenditures of female students for their cell phone loads.
c. Find the 80% confidence interval for the average expenditures of female students for their cell phone loads.
3. Based from record, the population standard deviation of the monthly income of all newly hired IT graduates is Php500.00. A group of researchers surveyed 20 newly hired IT graduates and obtained a mean monthly income of Php33, 500.00. Assuming that their monthly income is approximately normally distributed, Find:
a. the point estimate of population
b. the margin of error if the confidence level is at 90%.
c. the 98% confidence interval of the monthly income of all the newly hired IT graduates.
4. XYZ University claims that some of their BS Accountancy first year students shifted to another course because of their retention policy, which is normally distributed. A random sample of 200 students revealed that 55 of them shifted to another course after their first year.
a. Compute the proportion estimate of the parameter.
b. Find the 95% confidence interval of the population proportion.
a) Determine the missing frequencies of the following distribution given that the median
is 33.5 and themode is 34.0.
Class limits 0-9 10-19 20-29 30-39 40-49 50-59 60-69 Total
Freq. 4 16 f3 f4 f5 6 4 230
b) Compute the arithmetic mean.
c) Compute the value below which 25% of the observations lie.
d) Compute the value above which 25% of the observations lie
1.Given a finite population 12, 14, 15, 16, and 20.
a Find the mean and the standard deviation to estimate the parameters.
b. Set up a sampling distribution of the mean using a sample size of 2 without replacement.
c. Show that the sampling distribution of the sample means is an unbiased estimator of the population mean.
2. Given the following data n = 75,= 50, and a = 10, the sampled population is normally distributed. a Compute the standard error of the mean.
b. At 95% confidence level, what is the margin of error?
c. Find 90% confidence interval for the population mean.
developer needs to input the following information from the console using programming to register passenger:passenger id:a random 7 digit number for passenger id with a default value;....passenger name:a string field for passenger name(maximum 50 characters);....email:a string field to capture the email;....password:a string field for password(maximum 30 characters);....Address:a string field to capture street,city details(maximum 100 characters);...Contact number:text field(maximum 10 characters);....once all fields are taken as input,passenger details need to be inserted in array/list/appropiate collection.after successful registration,a registration acknowledgment message need to be displayed on the console as "passenger registration is successfull".
Consider the relations Authors(auID,name) and Authoring(articleID,authorID), containing
information on names of authors, and who is authoring which papers, respectively.
i) Write an SQL query that returns for each article, its ID, title and the number of authors.
ii) Write an SQL query that returns the titles of articles authored by 'Robert Tarjan'.
iii) Write an SQL query that returns the number of co-authors of 'Robert Tarjan'. (I.e., the number of
authors who have written at least one article together with him
Write an SQL query that returns for each article, its ID, title and the number of authors.
Regardless of compounds p, q, r which pair of the molecules are isometric and give a reason. (Benzyl chloride)
