Which of the following is NOT a valid method for detecting determinate errors?
1. T/F ? analysis of standard samples
2. T/F ?calculation of the standard deviation
3. T/F? have other scientists analyze the sample
Which of the following is NOT a valid method for detecting determinate errors? 1. T/F ?...
Which is not a method for detecting determinate (systematic) errors? 1. analysis of standard samples 2. calculation of the standard deviation 3. variation of the sample size used in the analysis 4. analysis of the sample by another method
Which one from the following statements is true (T), and which is false (F)? [I mark each (5 Marks) Q1. random errors due to environmental factors a) Determinate errors are random errors due to environmental factors b) Qualititative analysis refers to what is in the sample c) A primary standard is a high molecular weight chemical d) For the Mohr method, the titration is used to measure halides e) Classical methods are slower than instrumental methods-L- Which one from the...
A trial balance would only help in detecting which one of the following errors? An error when transferring the debit side of journal entry to the ledger occurred; it was recorded as a credit. The credit side of the transaction was recorded correctly. A transaction that is not journalized. A journal entry that is posted twice. A trial balance would help detect all of these errors. For a given transaction, the account that should have been debited was credited and the account that should have...
1. Circle True (T) or False (F) for each of the following statements: T F The following table, which lists values of x and their probabilities, represents a valid probability distribution: 3 4 S PYx) 0.32 0.54 0.24 T F The following table, which lists values ofx and their probabilities, represents a valid probability distribution: 0 PX) -.09 0.28 0.42 0.39 2 3 variable. TF The speed of a car travelling on the Queen Elizabeth Highway is an example of...
Which of the following is the error term (denominator) used to compute a t-value in an independent samples t-test. Standard error of mean computed based on population standard deviation Standard error of mean difference computed based on standard deviation of mean difference between the two sets of associated scores Standard error of mean computed based on pooled standard deviation of the two samples Standard error of mean computed based on sample standard deviation Any research question that can be answered...
1. Identify which of the following structures are statically determinate, which statically indeterminate and which have mechanisms.
R problem 1: The reason that the t distribution is important is that the sampling distribution of the standardized sample mean is different depending on whether we use the true population standard deviation or one estimated from sample data. This problem addresses this issue. 1. Generate 10,000 samples of size n- 4 from a normal distribution with mean 100 and standard deviation σ = 12, Find the 10,000 sample means and find the 10,000 sample standard deviations. What are the...
State which type of parameter is to be estimated, and the correct method for the following. Do not solve. A simple random sample of size 23 has mean 3.61. The population standard deviation is 1.79. The population is approximately normally distributed. Construct a 90% confidence interval for the population mean. 1. The parameter is the population (choose one) mean, proportion, standard deviation, variance 2. The correct method to find the confidence interval is the (choose one) z, t, chi-square method
please answer correctly and answer all questions.. this is revision question... 7. Which of the following is BEST graphical method for describing categorical data? A. Bar chart B. Histogram C.Box-plot D. Pareto chart 8. Which of the following is NOT property of the variance? A. It measures the amount of spread or variability of observation from mean B. Standard deviation is square root of variance C. Normally used for describing measure of dispersion during reporting research data D. It is...
1. Explain what is meant by independent samples. In other words, what are the characteristics that would lead one to define two samples as independent. In the independent samples t test we have two samples of interested but we still work from a single sampling distribution. Illustrate and explain how this is achieved. 2. As was the case with the one sample t test, we need to develop an estimate for the standard error in the independent samples case. However,...