Q2 A computer used by a 24-hour banking service is supposed to randomly assign each transaction to one of 5 memory locations. A check at the end of a day's transactions gave the counts shown in the table to each of the 5 memory locations, along with the number of reported errors. Memory 1 2 3 4 5 locations Number of 82 100 74 92 102 transactions Number of 11 12 6. 9. 10 reported errors The bank manager wanted to test whether the proportion of errors in transactions assigned to each of the 5 memory locations differ at 1% level of significance.
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- Suppose the probability of erroneously transmitting a single digit is P=0.03. Compute the probability of transmitting a 4-bit code word with (a) at most one error, and (b) exactly four errors.Claim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 688 randomly selected adults showed that 37% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information.In a toy shop ,2% of the toys are defective.If a boy selects 4 toys randomly ,find the probabiility of getting atleast one of the toys defective .
- Nationally, at least 60% of Ph.D. students have paid assistantships. A collegedean feels that this is not true in his state, so he randomly selects 50 Ph.D.students and finds that 26 have assistantships. At α = 0.05, is the deancorrect?Claim: A of adults would erase all of their personal information online if they could. A software firm survey of 653 randomly selected adults showed that 61% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal informationQ5: Claim: A majority of adults would erase all of their personal information online if they could . A software firm survey of 563 randomly selected adults showed that 64 % of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. A. Express the original claim in symbolic form . Let the parameter represent the adults that would erase their personal information (type an integer or a decimal . Do not round ). B. Identify the null and alternative hypotheses.
- For example, for student ID s1243657, the 4th digital of s1243657 is “3”, therefore variable “A” is “Use interactive activities”; the 5th digital of s1243657 is “6”, therefore variable “B” is “Give a lot of assignments”; the 6th digital of s1243657 is “5”, therefore variable “C” is “Good communication skills. Take student id S12042516 as an example. With the data collected, Dr Tian ran a test to see if there were significant relationships between A, B, C and satisfaction toward e-learning. i ) Suggest the test that should be used and explain your reason. State the independent and dependent variables, underlying null and alternative hypotheses.Claim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 440 randomly selected adults showed that 37% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information. equals= (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. H0: equals= H1: (Type integers or decimals. Do not round.)A researcher wishes to see whether there is a difference in the weight loss ofwomen following one of the three special diets. Women are randomly assignedto the three groups and placed on the diet for 2 months. The weight losses (inpounds) are shown here. At α = 0.05, can the researcher conclude that there isa difference in diets?
- Claim: A majority of adults would erase all of their personal information online if they could. A software firm survey of 568 randomly selected adults showed that 62% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information. b. Identify the null and alternative hypotheses.A research center claims that 30% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1100 adults in that country, 34% say that they would travel into space on a commercial flight if they could afford it. At α=0.05, is there enough evidence to reject the research center's claim? Complete parts (a) through (d) below. (a) Identify the claim and state H0 and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At least enter your response here% of adults in the country would travel into space on a commercial flight if they could afford it. B. 3030% of adults in the country would travel into space on a commercial flight if they could afford it. C. The percentage adults in the country who would travel into space on a commercial flight if they could…A research center claims that 30% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1100 adults in that country, 34% say that they would travel into space on a commercial flight if they could afford it. At α=0.05, is there enough evidence to reject the research center's claim? Complete parts (a) through (d) below. (a) Identify the claim and state H0 and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At least enter your response here% of adults in the country would travel into space on a commercial flight if they could afford it. B. enter your response here% of adults in the country would travel into space on a commercial flight if they could afford it. C. The percentage adults in the country who would travel into space on a commercial…