These are true or false questions. Thank you!

Chapter 6 1. Point estimates are the estimate of the mean and proportion that we obtained from a sample. 2. Confidence intervals are the lower and upper boundaries of the confidence limits. 3. The 99% confidence interval will be wider than the 95% confidence interval. 4. The lower limit for the 95% confidence limits for a sample of 200 that had a mean of 34,500 and a standard deviation of 9,887 is 33, 129.73. 5. The population mean is called mu, and the sample mean is called x-bar. 6. If the sample size is larger than 30, the t distribution is used instead of the z distribution. 7. When calculating the confidence interval for a small sample, the t distribution is utilized to obtain the bivione or critical value. 8. A researcher will have more confidence that the sample mean estimates the unknown population mean when the sample size is larger. 9. The estimated standard deviation of a sampling distribution gets smaller when the sample size is decreased. two babivib eemquiuo airllesoo 10. When trying to obtain greater confidence, the researcher loses precision. noup how is