A severe storm has moved into your area and the weather sirens have begun to go off. The frequency of the sirens ranges between 200 HZ and 2,000 Hz. What is the range of wavelength emitted sounds? (the velocity of sound in air is 340 m/s)
017 to
0.59 to 5.9 m
0.59 to 1.7 m
0.17 to 5.9 m

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?