Anhanes report gives data for 654 women aged 20–29 years. the mean bmi of these 654 women was x¯=26.8 . we treated these data as an srs from a normally distributed population with standard deviation =7.5 . (a) suppose that we had an srs of just 100 young women. what would be the margin of error for 95% confidence?

What are correct trigonometric ratios that could be used to determine the length of ln

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?