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1. The annual earnings​ (in dollars) of 35 randomly selected microbiologists are shown in the data...

1. The annual earnings​ (in dollars) of 35 randomly selected microbiologists are shown in the data table. Use the data to​ (a) find the sample​ mean, (b) find the sample standard​ deviation, and​ (c) construct a​ 98% confidence interval for the population mean. 99 comma 562 80 comma 800 78 comma 478 67 comma 513 51 comma 609 68 comma 005 93 comma 538 65 comma 987 78 comma 937 73 comma 393 44 comma 374 86 comma 745 61 comma 321 58 comma 060 55 comma 246 78 comma 561 47 comma 447 98 comma 021 80 comma 382 92 comma 507 63 comma 334 74 comma 342 50 comma 839 60 comma 678 92 comma 249 83 comma 614 79 comma 272 63 comma 630 74 comma 281 57 comma 235 46 comma 740 89 comma 536 76 comma 085 61 comma 645 82 comma 443

2.In a survey of 3449 ​adults, 1413 say they have started paying bills online in the last year. Construct a​ 99% confidence interval for the population proportion. Interpret the results.

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milcah answered 1 year ago
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