At distribution with 6 degrees of freedom is graphed below. The region under the curve to the right of is shaded.t = 1

The histogram to the right shows the times between eruptions of a geyser for a sample of 300 eruptions (which means 299 times between eruptions). Over the histogram, draw a smooth curve that captures its general features. Describe the distribution in terms of its number of modes, its symmetry or skewness, and its variation. Chose the correct answer below. Frequency 60- 40 20- OA. three modes, symmetric, wide variation. B. one mode, symmetric, low variation C. two modes, left-skewed, wide variation. OD. one mode, right-skewed, moderate variation 0- 50 60 70 80 90 100110 4 ہے Q Q Q

5.2 t-distribution. The figure on the right shows three unimodal and symmetric curves: the standard normal (z) distribution, the t- distribution with 5 degrees of freedom, and the t-distribution with 1 degree of freedom. Deter- mine which is which, and explain your reasoning. -4 -2 0 2 solid dashed dotted

5) Provide an appropriate response. The histogram shows the lifespan of a sample of 125 light bulbs. Over the histogram, draw a smooth curve that captures its general features. Then classify the distribution according to its number and its symmetry or skewness. 45T 40- 35- 30- 5 25- 20- 15- 10- 5- 0- 1 2 3 Q A) left-skewed Lifespan of Light Bulbs 4 5 6 7 7 8 8 9 Times (months) 10 11 12 B) Right-skewed C) Symmetric D) Bimodal, Symmetric

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than-1.54. 2 Sketch the region. Choose the correct graph below. OA. F2 Wiew an example Get more help. W S X -1.54 5373255.docx H amand # 3 SO F3 E Q D Q C C DSA 4 Q "A R OB. F *NO REF SAMPLE....pdf % OR LO 5 V & -1.54 T G 6 A B D MacBook Air Y H TEMPLATE Sel.....docx & 7 F7 U O C. N * 8 DII 1 M ( 9 K resume..docx DD O < O L F10 O D. P command -1.54 1.54 Clear all : ; { + [ option Check answer ? Show All } ] 11 :T X dele

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Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the bone density test scores that can be used as cutoff values separating the lowest 10% and highest 10%, indicating levels that are too low or too high, respectively. Sketch the region containing the lowest 10% and highest 10%. Choose the correct graph below. OA. -Za Za Q The bone density scores are ☐ OB. -Za Za (Use a comma to separate answers as needed. Round to two decimal places as needed.) ○ C. Q Za -Za D. Q a G Za -Za

Assume that the readings on the thermometers are normally distributed with the mean of 0° and standard deviation of 1.00°C. Assume 2.5% of the thermometers are rejected because they have readings that are too high and another 2.5% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others.   Which graphs represent the region in which thermometers are rejected?   The cutoff values are ______ degrees. (Use a comma to separate answers as needed. Round to two decimal places as needed)

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0.78. Sketch the region. Choose the correct graph below. OB. -0.78 0.78 0.78 0.78 0.78 The probability is. (Round to four decimal places as needed.)

Direction: Determine each of the following areas of specific regions under the normal curve using probability notation. Then show each of these regions graphically. 1. At most z = -1.5 2. At least z = -2