A dentist is suspected of defrauding insurance companies by describing some dental procedures incorrectly on claim forms and overcharging for them.  There are five suspicious procedures, so the investigators randomly select three procedures and inspect all the bills for those procedures. What type of sample was taken?     voluntary response sample     convenience sample     cluster sample     stratified sample     simple random sample     systematic sample

Q: a) Perform an appropriate hypotheses test at the 5% level, to determine if Wrigley’s claim for the…

A: Provided information is, The Wrigley Company, makers of Skittles candy, claims that they produce…

Q: A marketing company offers to pay $5 to the first 100 people willing to respond to their…

A: Answer 2 .Convenience sample

Q: Explain in your own words the advantages of bigger random samples in a sample survey

A: Explain in your own words the advantages of bigger random samples in a sample survey

Q: entering your work cafeteria and are approached by an individual to participate in their study by…

A: Given that  You are entering your work cafeteria and are approached by an individual to participate…

Q: A company XYZ know that replacement times for the quartz time pieces it produces are normally…

A: Find the probability  that a randomly selected quartz time piece will have a replacement time less…

Q: Each month, the census bureau mails survey forms to 250,000 households asking questions about the…

A: Simple random sampling: In simple random sampling, each unit in the population has equal chance of…

Q: . When an accurate and complete list of the population is not available, a sampling will suffer…

A: We want to tell you, which one is the correct choice.

Q: Explain in your own words: What is sampling error? What is a representative random sample?

A: we explain in the following.

Q: uper Markets Inc. is considering expanding into the Scottsdale, Arizona, area. You, as director of…

A: Introduction - t=x1-x2s12n1+s22n2where, x1=mean of sample 1s1=Sd of sample 1s2=Sd of the sample…

Q: A political campaign wants to estimate the number of adult residents who voted in the last city…

A: Detailed explanation:(a)  We must take into account which survey sample is the most representative…

Q: In conjunction with the housing foreclosure crisis of 2009, many economists expressed increasing…

A: The degrees of freedom for the between sample variation is, Where,   K denotes the number of…

Q: A university is considering building a new dorm building.  Around dinner time, a representative from…

A: In simple random sampling procedure, each of the population unit has same chance of being included…

Q: (c) Send a team of five research assistants to Bishop Street in downtown Honolulu. Let each…

A: Cluster sampling: Cluster sampling is defined as a method of sampling in which, at first, the entire…

Q: You are conducting a statistical survey of library users. There are approximately 2500 people in the…

A: Total size of the population = 2500 peopleNumber of people to be selected for survey = 25 people

Q: 2. Explain the systematic random sampling approach and provide an example.

A: Sampling is nothing but the technique of selecting individual members from of the population…

Q: Which of the following are sources of sampling error and which are sources of nonsampling error?

A: Sampling errors are the errors that are arises due to fact that samples are taken to infer the…

Q: We want to test a new drug, and we want to ensure that all age groups are represented. To do this,…

A: Stratified random sampling is a method of sampling where the population is divided into smaller…

Q: A child has an enormous jar in which she has been saving all of her spare change. In order to…

A: She dumps all of the coins.

Q: Suppose you are the president of the student government. You wish to conduct a survey to determine…

A: The systematic sampling method is the method in which the sample point is selected at a regular…

Q: Identify the kind of sample that is described. A salary committee for a Midwestern college sends an…

A: Given: A salary committee for a Midwestern college sends an email to all employees asking them to…

Q: A start-up cell phone applications company is interested in determining whether household incomes…

A: The provided information is as follows:The total sample size is .The total number of service…

Q: New York State has approximately 250,000 employees across over 70 state agencies, commissions and…

A: Given information: New York State has approximately 250,000 employees across over 70 state agencies,…

Q: A start-up cell phone applications company is interested in determining whether household incomes…

A: Given that there are 4 different service providers.A random sample of 24 subscribers to each of the…

Q: A company has been rating television programs for more than 60 years. It uses several sampling​…

A: Stratification is the process of dividing members of the population into homogeneous subgroups…

Q: Which of the following sampling methods was used in the study described below?  A researcher is…

A: There are various types of sampling procedures, which can be categorized into two groups:…