Determine which of the statements is true

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The level of calcium in the blood of healthy young adults follows a Normal distribution with mean μ = 10 milligrams per deciliter and standard deviation 

σ = 0.4. A clinic measures the blood calcium of 100 healthy pregnant young women at their first visit for prenatal care. The mean of these 100 measurements is ¯x= 9.8. Is this evidence that the mean calcium level in the population of healthy pregnant young women is less than 10? To answer this, test the hypotheses H0:μ= 10 versus Ha:μ< 10 at the 5% significance level. What is the value of the P-value?

  • less than 0.0002
  • 0.3085
  • 0.6170
  • greater than 0.99

Determine which of the following statements is true.

  • H0H0 should be rejected.
  • H0H0 should not be rejected.
  • HaHa should be rejected.
  • There is a 5% chance that the null hypothesis is true.

Reference no: EM132474180

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